.

Glossary: Stamped Envelopes and Wrappers

   

Glossary: Stamped Envelopes and Wrappers

This glossary is oriented toward US stamped envelopes and wrappers (the first four series in particular - those manufactured by the George F. Nesbitt & Company) but the inclusion of postally used envelopes means that the general terminology of postage in general is important.

In addition, the availability to relative;y easily include color illustrations is slowly causing this glossary to seem more encyclopedic.

 

postage

types of postage
  stampless
    free frank
      printed free frank
  prepaid adhesive
    regular issues
    official business
    stamped envelopes
  U.S. Postal Agency Shanghai
  local


collecting postal artifacts
  stamped envelopes
    entires
    cut squares   
      cut to shape
  stampless covers
    free frank
      printed free frank
  prepaid adhesive
    regular issues
      booklet panes
    official business
    --------------------
    affixed
    P.F. certificate

  stamped envelopes
    entires
    cut squares   


Types of Postal Things
  folded letter sheet
  letter sheet
  wrapper

Postal Description
  manuscript canceled

Parts of an envelope
  dateline
  addressed to
  return address
Parts of an letter
  letterhead

wafer seal
sealing impression
fresh
straight line (cancel handstamp)
folded wrapper
part-print letter
u311
Lyons PG 914
vertical file fold
offices in China
registered tag
dcds
registry tag
minor flaws
perfin
prex(?)
four-page circular
illustrated
official program
air mail
first flight
pmk
seaplane mail
well centered
very fine
flown
card

machine postmark
on cover
readdressed
pen & cork cancel
postage due
gutter strip
duplex postmark
APO
AEF imprint
sensor
imperf
post card
pictorial post card
light age
aging
machine cancel
duplex - combination of postmark and cancel
return address
backstamp
arrival backstamp
slight edgewear
flap
printed
manuscript
entire
vermillion
red-brown
perfs
perfs trimmed
prior to use
tied
typewriter address
corner-card
cameo advertisement
toned
strip of four
cover
postage due
due
s.e.
pencil
crayon
precancel
precancelled
opened at right
rate
first class (mail)
registered (mail)
oval cancel
registry date stamp
earliest known use
forwarding charge
advertised
in combination-with
r.f.d.
forwarded to

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acknowledgement of receipt stamp - forms used as prepayment on notices
 attesting to the delivery and receipt of mail.

Adhesive - a substance
 applied to the back of most stamps to facilitate attaching them to the
 mailing surface. Adhesives are both water-activated and
 pressure-sensitive (self-adhesive). Adhesives are described according to
 color, texture, pattern, or method of application. Gum is one such
 substance.

Adhesive revenue stamp - a stamp that may be affixed to an
 article to prepay postal fees, in contrast to a design printed directly
 on an article, as with postal stationery. An adhesive can also refer to a
 registration label or other label added to a cover.

Adversity cover -
 letter writing material, including envelopes, used when paper supplies
 were in short supply. For example, during the Civil War, the Union
 blockade proved critical in restricting goods from entering and leaving
 the Confederacy. Southerners faced increasing shortages of supplies,
 including paper and envelopes. Writers began to use whatever was handy as
 letter writing paper and envelopes. These items are known by philatelists
 as "adversity covers." Letters and envelopes were fashioned from the
 backs of ledger sheets, printed circulars, blank pages in books, maps and
 even wallpaper torn from walls. Some writers re-used envelopes by turning
 them inside out. Any blank or partially blank piece of paper could be
 pressed into service as an envelope.

Advertising cover - an envelope
 used as a form of advertising. Businesses began using this form of
 advertising in the mid 1800s. The cachets, meant to communicate a certain
 prestige, could be as simple as a blind-embossed corner card, a fancy
 return address corner card, an illustration of buildings or product, or
 as fancy as an all-over advertisement. The advertising envelope is still
 with us today and is most often found on our bills and junk mail.


Airmail envelope - an envelope transported by aircraft

Airmail pilots -
 a pilot who flew the mail. The profession of airmail pilot was, in 1918
 America, a horrendously dangerous one. A surviving pilot recalled that
 the group was "considered pretty much a suicide club." Aviation was still
 in its infancy. Few planes offered protection and crashes were common.
 The service had to prove itself from the outset. Flight schedules were
 controlled by the Post Office Department and officials strove to keep
 schedules tight regardless of weather conditions. Pilots flew without
 parachutes over land that had few, if any, emergency landing fields.
 There were no lights on the ground or in the plane to assist with night
 flights; no wireless weather reports; and no wing de-icers or radio
 guides. The life expectancy of the first mail pilots was as short as 900
 flying hours. Thirty-one of the forty pilots hired by the Post Office
 Department between 1919 and 1926 were killed while flying the mail. Most
 of those pilots died in the early years of the service. In 1919, one
 pilot died for every 115,325 miles flown. By 1926, the number had dropped
 to one pilot death for every 2,583,056 miles flown.

Airmail service - a
 type of mail transport using aircraft. The United States government
 instituted regular scheduled airmail service between New York,
 Philadelphia, and Washington on May 15, 1918. Coast-to-coast service
 began in 1920. Airmail has been carried under contract since 1926, with
 fast, efficient service resulting from extensive progress in the
 commercial airline industry.

Airmail stamp - a stamp prepaying postal
 rates for air transport. Italy issued the first airmail stamp in 1917.


Airway letter stamp - a local stamp issued by British European Airways
 (later British Airways) and also Cambrian Airways for transporting
 letters between airports

Arc roulette - a separation in which curved
 cuts appear as a semi-circle

Army Post Office (APO) - During the Civil
 War, the Civilian Postal Service delivered mail. A postmaster was
 assigned to each regiment and there was a post office on the battlefield
 for troops. When the Spanish-American War began, with soldiers fighting
 outside the United States, the Civilian Postal Service followed them. It
 wasn't until World War I that the Army Post Offices were developed. These
 were still operated by the Civilian Postal Service, but with assistance
 from the troops themselves. By the end of WWI there were a hundred
 sixty-nine Army Post Offices located in France. The first APO (Army Post
 Office) was opened on July 10, 1917. From WWI through current conflicts,
 military post offices have helped move mail to military personnel. In
 1917, when the first APOs were established, the civilian postal service
 worked the mail with the assistance of U.S. troops. By the end of the
 war, there were a hundred sixty-nine APOs in France moving mail to and
 from American troops stationed in Europe. The military's mail was placed
 under their control in 1940, when Congress established the Army Postal
 Service. This new organization continued to work with the U.S. Post
 Office Department to keep mail moving between the troops and their loved
 ones back home.

Arrow - marking in a margin, as a guide for cutting
 sheets into smaller units for perforations. After 1894, arrows were used
 at both ends of guide lines of U. S. stamps printed from flat plates.


Authorized delivery stamp - denotes the tax on mail permitted to be
 delivered by private services

Authorized non-profit organization stamp -
 a stamp issued by U.S. Post Office to prepay special concessionary
 postage rates on correspondence of charities and other institutions. See
 also 'bulk rate stamps'.

Autogiro mail service - a service using
 experimental aircraft that carried mail over short, but congested routes.
 The postal service placed an autogiro aircraft (a rotary-winged aircraft
 with a freely rotating main rotor) into use flying mail between Camden,
 New Jersey, and Philadelphia, Pennsylvania. A series of 'rehearsal'
 flights were made before the official flight on July 6, 1939. The New
 York Times reported on July 3, 1939, that these rehearsal flights took
 only 6.5 minutes, easily besting the time needed by mail trucks covering
 the same forty to forty-five mile route. On the first day of service,
 52,128 first-flight covers were cancelled and carried on the flight for
 philatelists, many of whom paid double the 6-cent stamp price to cover
 postage for a round trip. The postal service made over $3,000 in revenue
 from the flights. The autogiros were put to use flying airmail in
 Chicago, New Orleans, Los Angeles, and Washington, D.C., into the 1940s.
 Helicopter airmail service eclipsed autogiro service.

Auxiliary mark -
 secondary or supplementary marking that requires the mailer or addressee
 to take further action on a piece of mail; for example, a mark which
 notifies the recipient of postage due.

Balloon Post, Siege of Paris
 (1870-71) - a system devised by French Doctor Julien F. Jeannel
 (1814-1896) which used free flying, un-manned balloons to transport post
 over Prussian lines during the Siege of Paris. These balloons marked the
 birth of airmail delivery.

Barcodes - series of vertical bars of varying
 heights. Each digit represents a number from zero to nine. The postal
 barcodes represent the delivery address and are used by autmated
 machinery in processing.

Bicycle mail - a delivery service operated with
 local stamps by themselves or with stamp of the country

Bisect - a stamp
 cut or perforated into two parts, each half representing half the face
 value of the original stamp. Officially authorized bisects have often
 been used during temporary shortages of commonly used denominations. Some
 countries have, at times, permitted trisects or quadrisects.

Blind
 perforation - intended performations that are only lightly impressed by
 the perforating pins, often the product of a badly adjusted perforating
 machine or worn or missing pins

Board of Governers - the Board is the
 Postal Service's governing board. Each member is appointed by the
 President of the U.S., and the Postmaster General serves at the pleasure
 of the board. Governors' appointments are for nine years.

Boating stamp
 - stamp paying U.S. Coast Guard certificate fee for boats of more than
 ten horsepower; $3 and $1 values

Bogus stamp - a fictitious, stamp-like
 label created for sale to collectors, also known as a 'Cinderella'. Bogus
 issues include labels for nonexistent countries or postal
 administrations; nonexistent values appended to regularly issued sets;
 and issues for nations or similar entities without postal systems. The
 more contemporary 'stamp art' can fall into this category but often leans
 toward lewd exhibitionism.

Bulk rate stamp - low denomination stamps for
 use bulk mail

Bus parcel stamp - private labels issued by bus firms to
 prepay freight charges on parcels carried on their routes

Bypost stamp -
 local stamp issued by municipal postal service for the town. The name
 means 'town post'.


Cachet - a printed, embossed, or hand struck
 inscription, with or without illustration, impressed usually on the left
 side of an envelope face or postal packet to advertise the special
 circumstances under which the item was mailed, perhaps first or last day
 of issue, first flight, or any other commemorative situation. Cachets can
 be produced by the postal administration or by private parties and
 applied independent of postal authority.

Cancel - marks applied to
 stamps which prevent reuse. The marks often include a date, rate, route,
 or place of mailing.

Carriers' stamp - stamps used for mail delivery by private carrier from
 a post office to an addressee. They were frequently used in the period 
 1842-60. When the postal service was first organized, letters were only
 carried from post office to post office and there was no delivery to
 individual addressees.

Cash on Delivery (COD)
 Service - mail which collects the cost of postage and the product
 enclosed is collected from the recipient and forwarded to the mailer.
 This service is sometimes called 'Cash on Delivery'. Collect on Delivery
 (COD) service was introduced on July 1, 1913. Parcel Post Service,
 finally made available to U.S. citizens on January 1, 1913, was received
 with enormous enthusiasm. Farm families could use it to convey produce at
 standardized, understandable and lower rates than they had received from
 express companies. Marketers were thrilled with the promise of this new
 sales frontier. The growth of Parcel Post service was phenomenal. During
 the first six months of operation approximately 300 million parcels were
 handled. When Collect on Delivery (COD) Service was introduced seven
 months later, the popularity of parcel post went through the roof as mail
 order companies' profits exploded. COD and Parcel Post Service pushed the
 development of industry tied to the creation and development of unique
 parcel mailing containers, including those built to hold eggs by the
 dozens.

Certified Mail - a mail service that provides the individual
 sending a piece of mail with a receipt when the item enters the mail
 stream. It also provides a record of delivery when it reaches the final
 post office for dispatch to recipient

Certified mail stamp - a stamp
 paying for proof of delivery of first-class mail for which no indemnity
 value is claimed. Using this is a less expensive, less secure alternative
 to registered mail.

Charity seal - stamp-like label that is not a
 postage stamp and is distributed by a charity. They are often affixed to
 envelopes. Christmas seals are one example.

CIA invert - term applied to
 a U.S. stamp featuring a candlestick holder that was found upside down by
 CIA employees when buying stamps at their local USPS post office


Cigarette tube stamp - tax receipt paid on hollow tubes of cigarette
 paper to which small mouthpieces were attached, for those who made their
 own cigarettes, 1919-1933

Circular delivery stamp - local stamp issued
 in Great Britain (1865-67) by private companies for the delivery of
 circulars, sample packets, and other printed matter at rates which
 undercut the Post Office. A subsequent lawsuit disallowed the practice,
 but Post Office rates were lowered in 1870.

Citizens' Stamp Advisory
 Committee - the committee (also known as SeeSac for its initials - SCAC)
 that determines final stamp selection for the U.S. Postal Service. The
 fifteen committee members are selected by the postmaster general and
 typically include individuals whose backgrounds include educational,
 artistic, historical, and professional expertise. In addition to
 selecting stop topics, the committee also reviews and guides stamp
 designs.

City Delivery Service - a free mail delivery service, initiated
 on July 1, 1863, which was limited to northern cities with populations
 over 20,000. The service was a tremendous success, and by 1869 revenues
 from City Free Delivery superseded costs ten times over. After 1887, the
 department opened the service to areas with either populations exceeding
 10,000 or postal revenues in excess of $10,000. City carriers used a
 variety of methods to get their patrons attention, from ringing twice
 (yes, the postman did ring twice), to whistles and even wooden door
 knockers that helped save wear and tear on carriers' knuckles.

City Free
 Delivery Service - a form of mail service available prior to 1863. Many
 large post offices had letter carriers, but they weren't paid by the
 government. They earned their wages by charging recipients one or two
 cents for each delivered letter. Most people saved their money and picked
 up their own mail. When Free City Delivery Service began on July 1, 1863,
 it was limited to forty-nine Northern offices, using four hundred and
 fifty letter carriers. The service was a tremendous success and by 1869
 revenues from City Free Delivery were over ten times its cost. Until
 1887, the Post Office Department stipulated that only cities with
 populations in excess of 20,000 were eligible for free delivery. After
 1887, the department opened the service up to areas with either
 populations exceeding 10,000, or postal revenues in excess of $10,000.


Civil War patriotic covers - envelopes bearing expressions of patriotism,
 be they for the North or the Confederacy, such as flags, cannons,
 leaders, soldiers, and other wartime themes

Classification schemes.mail
 - a means of organizing mail. On March 3, 1863, the Post Office
 Department began to classify mail into three levels. The levels differed
 in cost, and over the years, processing techniques. Letters were
 first-class mail. Regularly issued publications were second-class mail.
 All other mail pieces were placed in the third-class mail category.


Classification schemes.post offices - a means of defining post offices.
 In 1864, post offices were divided into classes, determined by each
 office.s receipts and mail volume. Fourth-class offices were usually
 small units located on private property. First-class post offices were
 typically large and government-owned buildings.

Clean-cut perforation -
 the normal state of perforations from a perforating machine using sharp
 pins

Coil stamp - stamps processed in a single row and prepared for sale
 in rolls, often for dispensing from stamp vending and affixing machines.
 Some coils, including most U.S. coils, have a straight edge on two
 parallel sides and perforations on the remaining two parallel sides. Some
 coils are backprinted with sequence or counting numbers.

College stamp -
 stamps issued by the British universities of Oxford and Cambridge, which
 were officially granted the right to issue their own stamps for internal
 messenger service in the mid-1600s. Several other colleges used their own
 stamps between 1871 and 1886.

Collotype - a process utilizing a thin
 film of gelatin on the plate surface

Color missing - usually denotes an
 error in the printing process. It might be a completely missing step or
 the accidental stoppage of ink in a fountain on a multicolor press.


Color separation - a printing process using different colors from
 different plates, partially superimposed and blended to give a harmonious
 effect

Colored line roulette - perforations indicated by colored dashes
 printed over the top of the slits, used on stamps of Thurn and Taxis


Comb perforation - perforation produced by a machine which has the pins
 so arranged that they perforate three or more sides of each stamp in one
 complete row at a single stroke. One hole at each corner of each stamp is
 common to both the horizontal and the vertical row.

Commemorative stamp
 - a stamp printed in a limited quantity and available for purchase for a
 limited time. The design might note an anniversary associated with an
 individual, an historic event, or a national landmark.

Compound
 perforations - perforations that consist of two or more gauges per stamp.
 These usually consist of one gauge horizontally and a different one
 vertically. The horizontal gauge is written first and the vertical last
 (12 x 8). Mixed compound perforations are written clockwise starting with
 the top of the stamp (9 1/2 x 12 1/2 x 12 1/2 x 6 1/2).

Concessionary
 parcel stamp - stamps used by private firms at rates lower than
 government services

Confederate handstamps - the first Confederate
 stamps, which were lithographed, non-perforated five-cent sheets printed
 by Hoyer & Ludwig. They became available in October 1861. The 'stampless
 period', which refers to the six-month period before Confederate stamps
 were issued, forced Southern postmasters to develop a temporary system to
 replace this commodity. By creating provisional stamps or handstamps,
 postmasters were able to continue mail service in absence of a government
 issued postage stamp.

Confederate semi-official envelope - imprinted
 envelopes provided to departments within the Confederate government,
 though not everyone was granted franking privileges. 'Semi-official'
 envelopes, like the example shown here, required prepayment of postage in
 stamps.

Constitutional Post - post office established by Congress in
 1775

Consular service fee stamp - stamps affixed to documents showing
 payment of specific fees for various duties of consular officers

Control
 number - numbers printed on backs of stamp that denote the year of
 printing. Control letters serve as indices for accounting records.


Cordials and wines stamp - stamp indicating collection of tax on such
 products

Counterfeit - an item, usually a replica of an existing stamp,
 made to defraud collectors. The term can also be applied to overprints,
 postmarks, etc. One of the most commonly found Confederate counterfeits
 is a complete set of counterfeit Confederate general issues, which was
 made up and marketed by a dealer in Springfield, Massachusetts. They are
 thus known as 'Springfield Facsimiles'. Crudely fashioned woodcut
 counterfeits have been made and printed of each of the Confederate
 general issues by several different counterfeiters, but few, if any,
 would deceive even the most novice collector. Many of these crude
 counterfeits were made in the 1870s, when there was a ready market for
 them as space fillers. There was little intent to defraud contemporary
 collectors. Also in this category are items termed 'bogus', which never
 existed in the presented format, bearing names of imaginary or existing
 postal authorities or services. These were created to fool or defraud
 collectors. There are numerous of these items among Confederate
 postmaster provisionals. They are also often referred to as 'fantasies'
 or 'Cinderellas'. The most dangerous types of counterfeits or fakes are
 covers with faked postmarks or genuine but post-war canceling devices
 used to enhance otherwise genuine usages in an effort to increase the
 value.

Cover - an envelope, post card, or folded letter sheet that has
 been cancelled

Cover (souvenir) - an envelope or item of postal
 stationery cancelled as a keepsake

Cracked plate - stamps that show
 evidence that the plate from which they were printed was cracked

Creased
 paper - a condition that creates a colorless wrinkle on a finished stamp.
 A crease occurs when the paper is fed into the press unevenly. A crease
 occurring after printing damages the stamp.

Curtiss Jenny - the
 Curtiss-Jenny JN-4 airplane, nicknamed the 'Jenny'. The Jenny was
 originally manufactured for army training use, but hundreds of surplus
 Jenny airplanes became available for public use at the end of the First
 World War. Just prior to the end of the war, six of these airplanes,
 designated JN-4H for their one-hundred fifty horse power Hispano-Suizo
 engines, were used for the first regularly scheduled Air Mail Service.
 Click here to learn more about the Jenny.
 http://www.postalmuseum.si.edu/airmail/historicplanes/postal/historicplanes_postal_jenny_long.html

Customs fee stamp - a stamp indicating payment of various customs fees
 excluding customs duties. Eight stamps were issued by the U.S. Postal
 Service between 1887 and 1918.

Cylinder numbers - numbers printed in
 small type on British photogravure stamps

Definitive issue - a stamp
 issued in an indefinite quantity and for an indefinite period, usually
 several years or more. The United States presidential issue of 1938 and
 the 1995 32-cent Flag over Porch stamps are examples. Definitive stamp
 designs do not honor a specific time-dated event.

Dial (handstamp) -
 portion of a postmark that notes the city, date, and time

Die - the
 original engraving of a stamp design, usually recess-engraved in reverse
 on a small, flat sheet of soft steel. In traditional intaglio printing, a
 transfer roll is made from a die, and printing plates are made from
 impressions on the transfer roll. When more than one die is used in the
 production of an issue, distinctive variations are often identifiable.


Documentary stamp - a revenue stamp indicating payment of tax or fee on
 official or business document; overprinted to indicate use such as silver
 tax

Double entry - a term which refers to a visual characteristic on an
 engraved stamp such as partial doubling of the design due to misalignment
 of the transfer roll or over-rocking of a transfer roll which carries
 more than one design

Double impression - two impressions of the same
 stamp resulting from the sheet being run through the press twice

Double
 or triple perforation - a situation produced when a sheet is accidentally
 perforated more than once in the allotted space. This might result when
 the sheet is cut off center.

Dragging - the re-opening of lines for more
 color

Drop letter - mail to be delivered to an address within the same
 postal delivery area as the office in which it is posted. It is charged a
 lower postage rate.

E-COM - an acronym for Electronic
 Computer-Originated Mail. The service began in 1982, years before
 widespread private Internet use. It allowed individuals to send a message
 electronically between post offices, with a hard copy provided to
 recipient by the receiving post office. The service ended in 1985.


Electric eye perforation - a type of perforation equipment. An
 electronically-controlled mechanical device acts as a guide in the
 operation of the perforating machine. Short, colored dashes are printed
 on the stamp sheet margins to activate the perforation machine.


Embossing - the process of giving relief to paper by pressing it with a
 die. Embossed designs are often found on the printed stamps of postal
 stationery. Selected stamps of certain countries have been embossed.

En
 epargne - 'in relief' type of printing plate used in letterpress process


Encased postage stamp - a postage stamp, first used during the American
 Civil War, encased within a protective covering that was used as a coin
 during periods of metal shortages

Engraving - a method whereby ink is
 carried in depressions below the surface of the plate, and from there
 transferred to the paper. Engraving is usually done by hand directly on
 wood or a steel die. Some dies are produced by etching the metal with
 acid, which creates depressions in the exposed area to form the design.


Expedition issue - a stamp issued by the state for use of members of
 official scientific, exploratory, or military expeditions to frank
 correspondence home

Facing - identification mark which consists of a
 series of vertical bars read by automated postal equipment that
 identifies, orients, and separates various classes of mail

Facsimile - a
 likeness or imitation of a genuine stamp, marked in some way to denote
 its status so that it doesn't deceive a collector or defraud a postal
 administration. Catalog illustrations may be considered facsimiles.

Fake
 - a stamp, cover, or cancel that has been altered to appeal to a
 collector. In a broad sense, fakes include repairs, reperforations, and
 regummed stamps, as well as painted-in cancels, bogus cancels, or
 counterfeit markings.

Fancy (handstamp) - postmark with a decorative
 design

Fifth International Philatelic Exhibition (FIPEX) - The Fifth
 International Philatelic Exhibition was held in New York, April 28 to May
 5, 1956.

First-day cover - a newly issued stamp affixed to an envelope
 and postmarked on the first day of sale at a city designated by the Post
 Office Department or Postal Service

Flat plate - a flat metal plate used
 in a printing press, as opposed to a curved or cylindrical plate

Flats -
 a postal processing term that stands for large envelopes, newsletters,
 and magazines. To be designated a 'flat', a mail piece must have one
 dimension that is greater than 6 1/8" high, 11 1/2" long, or 1/4" thick.


Fleet post office - an official U.S. post office for use by U.S. military
 naval units abroad

Flight cover - an envelope actually flown in the
 vehicle being commemorated

Folded paper - paper that is folded over at
 any time during the manufacturing processes. When unfolded, the paper
 will show a white space under the fold, and, conversely, may be printed
 on the back.

Foreign mail stamp - stamp issued specifically for use on
 mail going overseas. It is denoted by either the inscription or by the
 higher-valued currency used.

Forgery - a fraudulent reproduction of a
 postage stamp intended to deceive postal authorities and/or collectors


Franchise stamp - a stamp supplied without charge by postal
 administration to an individual or organization for distributing its mail


Franking - a mark on a cover that postage has been paid or that the
 envelope is being carried free of postage. Modern forms of franking are
 postage stamps and metered stamps.

Freaks - abnormal, usually
 non-repetitive occurrences in the production of stamps that results in a
 variation from the normal stamp but falls short of producing an error.
 Most paper folds, over-inking, and perforation shifts are freaks.

Free
 mail stamp - mail sent without a fee due to natural disasters. Troops on
 active duty might also enjoy this franking benefit.

Future delivery
 stamp - a stamp facilitating collection of tax on sale, agreement of
 sale, or agreement to sell any products or merchandise at any exchange
 board of trade, or other similar place for future delivery

General Post
 Office - common term for the administrative entity of the U.S. postal
 system in the late eighteenth and early nineteenth century

General
 Postal Union - a union of nations established in 1874, later known as
 Universal Postal Union. The international union was formed to ensure the
 creation of a single postal territory for the reciprocal exchange of
 correspondence among countries.

Grill - a pattern of small, square dots
 in an overall square or diamond-shape that is applied to stamps to
 prevent their reuse after cancellation. The embossing breaks the paper
 fibers of the stamp, allowing the canceling (obliterating) ink to
 penetrate effectively and preventing this ink from being removed by
 would-be defrauders.

Guerrilla stamp - a stamp issued by guerrilla
 forces to frank their correspondence. Use of such stamps was common in
 Taiwan (1895), Philippines (1898), South Africa (1899-1902), Ireland
 (1922-23), China (1929- ), and South Vietnam (1963-76).

Guide dots -
 faint markings used to facilitate the correct spacing and laying down of
 the impressions on the plate

Guide lines - horizontal and vertical lines
 that extend wholly or partially across sheets to facilitate perforating
 and cutting into panes. U.S. stamps are normally sold in panes of one
 hundred subjects. Blocks of stamps bearing such lines are designated as a
 'guide-line pair' or 'block', and blocks showing intersecting lines are
 termed 'center-line blocks'.

Gutter - the space between one unit and the
 next, whether a stamp, pane, or sheet. The term is generally applied to
 the wide space between panes.

Gutter snipe - a mis-cut of the gutter
 that leaves part of a stamp attached to the full gutter. Gutter snipes
 are regarded as 'freaks', not errors.

Handstamp - a stamp or overprint
 which has been applied to paper singly and without mechanical means; a
 hand-held apparatus for printing that is struck on an ink pad and then
 pressed on paper. The die may be of metal, rubber, or wood.

Handwritten
 plate number - handwritten numbers found where a die is not used

Harrow
 perforation - perforation generally used for small souvenir sheets in
 which the entire sheet is perforated in one operation

Highway Post
 Office Service - a mail distribution network. To compensate rural
 communities for the loss of Railway Mail Service, the Post Office
 Department inaugurated Highway Post Office (HPO) Service on February 10,
 1941. President Franklin D. Roosevelt had signed a measure creating the
 Highway Post Office Service on July 11, 1940. The inaugural route ran
 between Washington, D.C., and Harrisonburg, Virginia. The expansion of
 the Highway Post Office Service was postponed during World War II. A
 second route was established in 1946. This new service, like railway
 service, was to be a mail distribution network comprised of rapid
 pick-up, sorting, and dispatch to key points en route between two
 principal terminal cities. Mail processed on HPO vehicles was transferred
 along the route to connecting Star Routes, mail trains, and to various
 rural post offices. Highway mail routes generally served an average of
 twenty-five post offices directly and many others indirectly through Star
 Route and railway mail connections. Highway Post Office routes were
 organized on round trips which averaged 150 miles each way. There were
 very good reasons for this: 1) the bus generally held enough gas for
 about one 150 mile trip, and fuel stops wasted time; 2) service garages
 would have to be set up at both terminal cities, doubling the cost. For
 roughly the next decade, as railway mail service shrank, highway mail
 service grew. From 1960 to 1963 HPO service was replacing an average of
 20 trains a month. The service essentially became obsolete when the Post
 Office Department decided to reorganize its mail handling/distribution
 system by adopting the sectional center concept (see ZIP Code). On June
 30, 1974, 33 years after the first experimental trip, the last Highway
 Post Office made its final run over the Cincinnati-Cleveland (Ohio)
 route. Ironically, Railway Mail Service outlasted Highway Post Office
 Service by three years.

Hotel stamp - a local stamp issued by a remotely
 located hotel to pay for delivery of guests' mail to the nearest post
 office. Some hotels had their own post offices.

HPO - an abbreviation of
 the Highway Post Office Service which operated between 1941 and 1974.
 Highway Post Office buses were used to replace Railway Mail Service in
 areas where train service had been discontinued.

Hyphen-hole perforation
 - perforation that utilizes the line method in cutting rectangular holes
 instead of the usual round ones. Some U.S. revenue stamps use this type
 of perforation.

HyPO - an abbreviation of the Highway Post Office
 Service, which operated from 1941 to 1974. Highway Post Office buses were
 used to replace Railway Mail Service in areas where train service had
 been discontinued.

Illustrated envelopes - illustrated or imprinted
 envelopes often used for advertising and propaganda

Imitation - a stamp
 produced by the postal administration deliberately imitating a design
 when the original plates are no longer available for reprints. An
 imitation might differ from the originals in paper, gum, size, color, and
 design detail. Imitations are produced to fill gaps in official
 collections and exhibitions as well as for sale to collectors.


Imperforate - the lack of some separation device between stamps such as
 perforation holes or rouletted slits that allow for easy tearing.
 Imperforate stamps have to be cut apart by scissors or blades. Most early
 issues were imperforate, and had to be hand-cut by the postmaster.


Imprint - any detail of a stamp's design printed at the time of the
 original stamp's production; inscription with name, initials, etc.,
 usually of the producers of the stamps. The latter is found in the
 margins of the sheets of the stamps.

Intelpost - technology that allows
 customers to send a facsimile transmission to foreign countries via the
 Postal Service

International reply coupon - receipts issued by member
 nations of the Universal Postage Union for return-postage payment. The
 certificates may be exchanged in foreign countries for local stamps.


Interrupted perforation - a system of perforation which adds strength
 between stamps on a coil by removing several pins from the perforation
 machines, thus creating wider spaces between the holes

Inverted frame -
 a term used to describe a misprint that leaves part of the image upside
 down or inverted. Occasionally, a single cliche is inverted in the plate,
 resulting in one color producing a tete beche in a multiple piece. That
 is, the inversion creates a pair of stamps connected together with one
 stamp right side up and the other upside down.

Inverted Jenny - a
 misprinted U.S. postage stamp showing an inverted image of a blue
 airplane. The error occurred on the 24-cent airmail stamp of 1918. Only
 one sheet of one hundred inverted center stamps was sold across the post
 office counter, and no other examples have been discovered by the public.
 The image attached to this record shows inverts from that single sheet,
 which were reunited during an exhibit at the National Postal Museum in
 the summer of 1996. For other information, photographs, and/or articles
 pertaining to this stamp, please refer to U.S. Design File C3.

Joint
 lines - lines that appear on gutters between sheets in rotary press
 printing and are caused by ink filling the space where the edges of the
 curved plates meet when mounted on the press cylinder

Journal tax stamp
 - a stamp denoting taxes on newspapers but often conferring free
 transmission through the post

Jubilee lines - dashes of color
 surrounding certain sheets or panes of stamps that are added to prevent
 damage or excessive wear by the pressure of the inking roller to the
 printing plate. These lines first appeared on British stamps of 1887,
 Queen Victoria's Golden Jubilee Year. It is called the 'co-extensive'
 line when broken, and it is called the 'continuous line' when unbroken.


Killer Postmark - any postmark that makes re-use of a stamp impossible


Kiss prints - marks that occur on sheet-fed presses when the paper
 accidentally contacts the inked plate before or after printing the
 stamps. As a rule, only a few marginal stamps will show the 'kiss'.


Knife - the cutting edge or 'cookie cutter', as philatelists refer to it,
 of the machine which cuts the envelope blank. Also the die-cut paper from
 which envelopes are folded.

Late fee stamp - a stamp paying additional
 fees on correspondence put into the post after normal closing hours, the
 intention of which is to connect with evening dispatches by mail trains


Letter carrier - the person who delivers mail to the addressee. Other
 terms for this position have included 'mailman' and 'mail carrier'.

Life
 insurance stamp - a stamp used in New Zealand to pay postage on mail sent
 by the Government Life Insurance Department

Line perforation - process
 by which a sheet of stamps is perforated one row at a time, proceeding in
 one direction, over the entire sheet. The sheet is then turned ninety
 degrees, and the process is repeated. The distinguishing characteristic
 is that the holes in the vertical and horizontal rows do not coincide at
 the four corners of each stamp.

Line roulette - a series of short dashes
 cut into the paper

Literacy fund stamp - a stamp used in government
 campaigns to combat illiteracy

Lithography - a printing process in which
 the design is drawn, photographed, and transferred to the stone or plates
 of zinc or aluminum in a greasy ink. It is then fixed by treatment with
 acid. In printing, the stone or plate is wet with a fluid that repels the
 printing ink, except on the greasy lines of the design. Such printing
 from a smooth surface produces no pressure through the paper or raised
 ink as results from typography engraving.

Local city government issue -
 a stamp issued for use in only one city or area

Local official stamps -
 stamps that franked official correspondence for one year to determine the
 amount of mail sent by designated provinces

Lottery stamp - a stamp
 whose fee covered postage and credit to the U.N. refugee fund; each stamp
 also had serial number for participation in late-year lottery. Associated
 with Norway and marked "June 1, 1964."

Lozenge perforation - perforation
 that consists of diamond-shaped holes

Mail collection service - letter
 boxes located on street corners for the deposit and collection of mail.
 Introduced in large U. S. cities in 1858, letters dropped in street boxes
 required an additional prepaid fee of 1-cent, but beginning in 1863 the
 collection service was performed free of charge.

Mailbag - the bag in
 which mail is transported by mailman, train, or some other means of
 conveyance

Mailbox - the container used to collect mail. Also known as
 'collection boxes' (where people can deposit their mail for later
 pickup). Mailboxes are also used at households and businesses to receive
 mail.

Marine insurance stamp - a stamp associated with the Netherlands
 and Netherlands Indies prepaying a fee to carry mail in a shipboard safe
 designed to float free in case of sinking. Also a special postal tariff
 instituted by U.P.U. in 1920 following losses in WWI. Abolished in 1924.


Master die - the die used in the embossing process and refers to original
 engraving in recess

Maximum card - a picture postcard bearing a postage
 stamp and a postmark relevant to the picture on the card. The design on
 the stamp usually mirrors that on the postcard. The postage stamp is
 usually affixed to the picture-side to heighten the effect. This style of
 use was begun in Europe at the beginning of the twentieth century and
 remains popular.

Metal currency stamp - a stamp for use on foreign
 parcels which had to be prepaid at the 'gold' exchange rate in hard
 currency (gold or silver). Internal mail, on the other hand, used stamps
 purchased in depreciating paper currency. Stamps of Peru overprinted
 'Plata' or silver are one example.

Metered mail - mail whose postage is
 paid by a machine that tracks the amount of postage applied by the
 machines

Migratory bird hunting stamp - a stamp produced annually for
 the Department of the Interior. Revenue from the sale of these stamps is
 used for waterfowl conservation. These are popularly called 'Duck
 Stamps'.

Military franchise stamp - a stamp allowing free postage of
 mail by military forces on active duty

Military stamp - a stamp used by
 military organizations and their personnel during both wartime and
 peace-keeping missions

Millesime - a numeral denoting the year of
 printing on many French and French colonial stamps. The millesime was
 located in the gutter next to the second row of stamps. Black numbers in
 the bottom right corner denote the year of printing after 1923.

Mochila
 - a Spanish term for knapsack. The mochilas used by Pony Express riders
 were made of leather and designed with four pockets, or cantinas, in
 which to carry mail.

Money Order - an order for the payment of money,
 usually issued by and payable at a bank or post office. Postal money
 orders originated in 1864. The maximum amount available at that time was
 30-dollars.

Mourning stamp - a stamp issued on occasions of national
 bereavement such as the death of a president or king. The stamp might be
 a special issue printed in black with a black edge, or it might have the
 borders of existing stamps printed in black.

MPLSM - acronym for
 'Multiple Position Letter Sorting Machines'. These machines operated
 through several work stations. Each worker sorted letters through
 keyboards attached to the machine. Workers read addresses and directed
 letters to the correct bin.

Narcotic tax stamp - a conventional U.S.
 revenue stamp with the overprint 'Narcotics', indicating that a tax has
 been paid on the shipment

Newspaper stamp - an impressed or adhesive
 stamp issued to prepay special rates for the sole purpose of mailing
 newspapers and periodicals

Nixie - a term used by Railway Post Office
 clerks to designate a piece of mail that cannot be sorted due to an
 illegible address. Such items were designated "dead letters" by other
 mail clerks.

No Sunday Delivery - a tab attached to the stamp indicating
 that the piece of mail was not to be delivered on Sunday. Removal of the
 tab indicated that Sunday delivery was allowed.

Obligatory tax stamp - a
 revenue stamp issued to collect funds for national or philanthropic
 purpose

Occupation stamp - a stamp overprinted or specially printed for
 use in a conquered territory occupied by the victorious military forces


OCR - an acronym for 'Optical Character Reader'. In the Postal Service,
 Optical Character Readers are used to read mail addresses and spray
 corresponding bar codes onto the envelopes for processing. The first
 postal OCR was used in the Detroit post office in 1965.

Official issue -
 a stamp issued for use on official correspondence. When inscribed or
 overprinted for use by specific government departments, the stamp is
 referred to as 'Departmental'.

Official seals - a seal used to close
 mail opened or damaged by the postal service or accidentally left
 unsealed by the sender

Offset printing - a printing process often used
 with lithography in which an inked image is transferred from the plate to
 a roller. In an intermediate step, the roller applies ink to the paper.
 The design is transferred from the plate to a rubber blanket, and then
 re-transferred to the stamp paper.

On-the-Fly - an exchange of mail
 between Railway Post Office cars and post offices without stopping the
 train. Mail was exchanged via cranes on which postmasters hooked a mail
 pouch. As the RPO car passed by, the mail was snagged by a hook attached
 to the side of the train car. Mail bound for the post office was placed
 in a pouch that was then tossed off the train and retrieved by the
 postmaster.

Overprints - words or devices printed on a stamp after it
 was completed. Overprints are used to provide stamps for countries which
 have none of their own; to define or alter the use of a stamp; to show
 changes in form of government; to mark a change in the name of a country;
 to denote occupation by a foreign force; to mark an anniversary; or to
 identify valid issues when identical stamps are in alien hands.

Parcel
 Post - a service provided by the Post Office Department which
 accommodated packages weighing over four pounds. Parcel Post service,
 finally made available to U.S. citizens on January 1, 1913, was received
 with enormous enthusiasm. Farm families used it to convey produce at
 standardized, understandable, and lower rates than they had received from
 express companies. Marketers were thrilled with the promise of this new
 sales frontier. The growth of Parcel Post service was phenomenal. During
 the first six months of operation approximately 300 million parcels were
 handled. When Collect on Delivery (COD) Service was introduced seven
 months later (July 1, 1913), the popularity of Parcel Post service went
 through the roof as mail order companies' profits exploded. COD and
 Parcel Post service pushed the development of industry tied to the
 creation and development of unique parcel mailing containers, including
 those built to hold eggs by the dozens.

Part-perforated - a stamp
 perforated in one direction only, either horizontally or vertically, and
 cut apart in the other direction

Patronage - the distribution of
 appointments to people based on their political or financial support.
 Patronage reforms began in 1883 with the Pendleton Act, but postmaster
 and rural letter carrier positions remained essentially political
 appointments until the reorganization of the postal system in 1970.


Perforation - a process involving the removal of small bits of paper in
 various shapes to allow for easy tearing. The number of perforations
 (each consisting of a depression and a projection) in two centimeters is
 called the 'gauge' of that perforation.

Personal delivery stamp - a
 triangular stamp inscribed with a D representing fee paid by addressee
 for mail to be delivered to him/her personally. Stamps inscribed with a V
 insured personal delivery to the addressee and were affixed by the
 sender.

Photogravure - a printing process in which a design is
 photographed on the printing plate through a fine screen. The process
 breaks the copy into very fine, square dots, and the depressions formed
 around the squares hold the ink, also known as 'gravure'.

Pillars -
 repetitive decorations or lines printed in the pane margins of
 watermarked paper to prohibit its being counterfeited

Pin roulette -
 tiny punctures that do not actually poke through the paper

Plate number
 - the serial number engraved on a plate which usually appears in a corner
 of a sheet of stamps. Single digit suffix numbers instead of the whole
 serial number are printed on coils.

Plate Proof - Certified plate proofs
 are the last printed proof of the plate before printing the stamps at the
 Bureau of Engraving and Printing. These plate proofs are each unique,
 with the approval signatures and date. For postal scholars these plates
 provide important production information in the plate margin
 inscriptions, including guidelines, plate numbers, and initials of the
 siderographer, or person who created the plate from a transfer roll.


Playing card stamp - a revenue stamp paying a tax on packs of playing
 cards. The revenue paid depended upon the value of the pack. Opening the
 pack usually destroyed the stamp.

Plebescite stamp - a stamp issued by a
 temporarily independent postal administration intended to influence a
 popular vote

Pneumatic tubes - a transport system that carried mail
 under city streets. The service, which began in 1893 in Philadelphia,
 used canisters that could carry up to six hundred letters each and travel
 at an average of thirty-five miles per hour.

POD - abbreviation of the
 term used by Postmaster General John McLean (1823-1829) for the
 administrative entity of the U.S. Postal Department. The title was used
 for the postal system until the postal reorganization act of 1970. The
 Post Office Department became the U.S. Postal Service on July 1, 1971.


Porte de mar stamp - a stamp used to indicate the amount to be paid to
 the captains of the mail steamers taking outgoing foreign mail. The
 phrase means 'Carried by Sea', and is associated with Mexican labels.


Post Card - a card used to send a message via the mail. The Post Office
 Department authorized the use of privately-created postcards in 1898.
 These cards usually included an image on one side and space for a message
 and an address on the other. Postcards were popular collecting items in
 the early twentieth century.

Post Office - the location at which mail is
 received, sorted, and delivered, and where stamps and other postal
 materials are sold

Post Office Department - term used by Postmaster
 General John McLean (1823-1829) for the administrative entity of the U.S.
 postal system. The title was used for the postal system until the postal
 reorganization act of 1970. The Post Office Department became the U.S.
 Postal Service on July 1, 1971.

Post Roads - any transportation network
 designated to carry mail. The Post Office Department designated waterways
 as post roads in 1823 and railways during the late 1830s.

Post-A-Book
 stamp - a self-adhesive stamp specifically issued for the mailing of
 books from retail bookshops

Postage currency - postage stamps used as
 small bills during a shortage of metal coins

Postage due stamp - a fee
 paid by the recipient of mail for underpaid postal charges

Postal Card -
 a card which is similar in look and function to post cards but which is
 produced by the postal service. Postal cards include pre-printed postage
 on the card

Postal fiscal issue - revenue stamp later authorized to be
 used postally

Postal Inspection Service - In 1772, postal inspectors (or
 'surveyors') were first contracted by Deputy Postmaster General Benjamin
 Franklin to conduct audits on various postmasters and their accounts. As
 the Post Office Department matured, the postal inspector's
 responsibilities greatly increased. Some of the duties they have
 performed over the years include: establishing new mail routes and post
 offices; appointing postmasters; hiring contractors to carry the mails;
 assisting in setting-up and establishing efficient military postal
 systems; protecting the mails in times of natural disasters and
 transportation-related accidents; and investigating mail fraud, mail
 thefts, and lost letters. Inspectors from this service were among the
 first on the scene after the 2001 9/11 attacks. In New York City, they
 secured the mail at the Church Street post office, located just across
 the street from the World Trade Center. Others were present at the crash
 scene of United flight 93 near Shanksville, Pennsylvania, to recover mail
 if possible. The service also has a strong program that helps people
 fight identity theft.

Postal Note Stamps - Unlike regular postage
 stamps, which are used to pay the rate for mail delivery, postal note
 stamps together with the postal note cards, were created to send small
 amounts of money up to ten dollars to anyone on the mainland of the
 United States. Similar in use to money orders, the stamps were created to
 send small amounts at a lower cost per transaction than money orders
 which were cost prohibitive for small values. The stamps were issued from
 February 1, 1945 until March 31, 1951. Not only did postal notes prove to
 be more affordable than money orders for small value transactions, they
 resulted in less paperwork for postal clerks, as demanded by the Post
 Office. With postal notes the clerk had only to affix the stamps and
 cancel them, a normal postal handling. The paperwork was completed by the
 customer who filled out the form himself. Each postal note contained
 three parts. On the left was the payee.s coupon. The middle contained the
 paying office coupon upon which postal note stamps were affixed. This
 portion was left at the post office when the money was paid. On the right
 was the purchaser.s receipt. The stamps came in eighteen denominations
 and the postal notes were printed in eleven denominations. Up to two
 stamps per note could be combined to reach values between 1-cent and
 10-dollars. Patrons could insure the note for a fee of 5-cents. At the
 top of each stamp are the words "United States of America" in white
 against a black background. The words "Postal Note" are printed in the
 novel font against a grey background. The value is also in white against
 a black background. Curled laurel branches are engraved around the value
 on both sides. The word "cent(s)" has been printed below. The stamps were
 designed by William K. Schrage and engraved by C.A. Brooks. The words
 were engraved by Axel W. Christensen. The numbers were engraved by John
 S. Edmondson (1,3,4,10,30,50,70,80 and 90 cents), Edward H. Helmuth (7
 and 20 cents) and Axel W. Christensen (2,5,6,8,9,40 and 60 cents).
 Printed by the American Banknote Company on a rotary press printer, the
 stamps have no watermarks and are perforated 11 x 10.5. The stamps were
 printed on two types of paper. The oldest paper was thick and gray in
 color and the newer paper was thin and white, the so-called melamine
 paper. The number of stamps actually printed is unknown. The amount is
 estimated around 660 million stamps total, resulting in approximately 40
 million of each value. The stamps were destroyed after use but a limited
 number were offered for sale to collectors in 1951.

Postal
 reorganization - the transformation of the Post Office Department into
 the United States Postal Service. In 1970, President Nixon signed the
 Postal Reorganization Act, which went into effect on July 1, 1971.


Postal savings stamp - a savings stamp redeemable as a credit to postal
 savings accounts. The purchaser filled a book with the savings stamps,
 which could be redeemed for a certificate. The Postal Stamp Savings
 program spanned 1911 to 1970.

Postal Savings System - a system for
 saving money which the Post Office Department operated from 1911 to 1967.
 Begun as a way to encourage individuals to create financial savings
 accounts, immigrants found it particularly useful since it resembled
 similar systems in their native countries. The system reached its peak in
 1947. In 1967, unclaimed deposits were turned over to the U.S. Treasury
 Department. Some money was kept for future claims, but legislation ended
 all claims after July 13, 1985.

Postal Service - a national, usually
 governmental, system of transmitting written communications. The U.S.
 postal system was reorganized in 1971. As a part of the transformation
 the Post Office Department, it was renamed the U.S. Postal Service in
 that year.

Postal tax stamp - a stamp used to raise funds for a specific
 purpose. Though not valid for postage, it has been required on mail at
 certain times.

Postal telegraph stamp - a stamp issued for use on
 telegrams but subsequently permitted to be used as a postage stamp


Postcard stamp - an adhesive postage stamp affixed to a postcard and then
 overprinted. Such a stamp was used in the Orange Free State, 1889-1897. .


Postcard tax stamp - a stamp issued as a tax on picture postcards sent
 through the mail. The postcards must also carry normal postage. Used in
 Russia ca. 1922.

Postmark - an authorized mark printed over a postage
 stamp that makes reuse virtually impossible while recording the date and
 place of mailing

Postmarking device - a tool for marking the origin,
 date, and transit of mail. Another use was to deface stamps, making them
 impossible to reuse. Such devices first appeared in Italy about 1454, but
 two centuries elapsed before they were widely used. Mechanical cancellers
 were developed in 1876 to speedily process the growing volume of mail. By
 1880, power-driven units could postmark 15,000 cards or letters per hour.


Postmaster - the individual in charge of the operations of a local post
 office. A little-used nineteenth-century variation of the term to address
 women functioning in this position was 'postmistress'.

Postmaster General - the executive head of the U.S. Postal Service.

Postmasters' provisional stamp - a postmaster-issued stamp used before the
 introduction of government issues, especially during an interregnum.


Potato tax stamp - a revenue stamp issued in 1935 which was mandated by
 the Potato Act. The Supreme Court declared the stamp unconstitutional,
 and it was consequently never used.

Precancel - a stamp cancelled prior
 to affixing on mail matter or before being deposited at the post office
 which allows the item to bypass the usual canceling process

Printing
 plate - any printing base used to print a sheet of stamps. The term
 'subject' designates a complete stamp design on a plate. Plates of four
 hundred subjects have been used for printing most of the U.S. stamps
 since 1890. Before that, smaller plates were generally used.

Private die
 - the engraving of a stamp design by a manufacturer for exclusive use by
 that manufacturer. This was allowed under the Revenue Act of 1862. Stamps
 printed from such dies are known as 'private die proprietary stamps'.


Private die proprietary stamp - a revenue stamp used to seal a container
 of, for instance, matches and playing cards. The stamp pays the tax on
 the item and often advertised the company's name. They were widely used
 between 1862 and 1883.

Private perforation - a perforation applied by
 individuals or companies instead of being officially perforated by the
 issuing authority. Some companies use special perforations to operate
 more efficiently in their vending and mailing machines.

Provisional
 stamp - a stamp produced, often issued during an emergency to meet an
 immediate need, whose value or purpose has been altered after printing by
 means of a surcharge or overprint.

Publicity envelope stamp - a stamp
 sold to veteran's organizations at reduced rates for use to raise funds
 for disabled veterans.

Railway Mail Service - the network of railway
 lines, Railway Post Offices, and Railway Post Office clerks that were
 used for transporting and processing mail on board moving trains

Railway
 Post Office - train cars that were the property of railway companies but
 used by and restricted to U.S. Post Office Department employees. The RPO
 cars were usually placed directly behind the locomotive.

RBCS - acronym
 for 'Remote Bar-coding System'

Re-engraved - term used for a new plate
 which has been made from a worn die that has been deepened and
 strengthened

Re-issue - a stamp previously withdrawn from use but
 reintroduced from old stocks or by fresh printings from original plates


Recorded message stamp - a stamp used in Argentina, 1939, which prepayed
 the postage fee for sending recorded message discs

Regional stamp - a
 stamp issued by Great Britain (beginning in 1958) and sold in Scotland,
 Wales, Northern Ireland, Guernsey, Jersey, and Isle of Man but valid for
 postage throughout the United Kingdom

Registered Mail - mail that is
 recorded by the post office when sent. It is also recorded along points
 in the route to track it. Because registered mail has often been used for
 valuable properties, it was often a prime target in mail robberies.


Registration stamp - a stamp issued in 1911 to pay the fee for
 registering mail

Relief printing - a term used to designate printing
 from a base in which those areas to appear in color on the stamps are
 raised above the non-printing areas. Only the color-producing areas come
 into contact with the paper at the moment of impression or printing.
 Definition taken from "Fundamentals of Philately" by L. N. Williams.


Remainders - unsold stamps of a discontinued issue that are normally
 destroyed but can be overprinted, surcharged, or revalidated for postage.
 They are sometimes sold to collectors in their original state, cancelled,
 or overprinted to show they have been withdrawn from use.

Remarque - A
 small mark or sketch engraved in the margin of a plate to indicate its
 stage of development prior to completion.

Reprint - a stamp reprinted
 from the original printing plate after the stamp has become a postally
 invalid issue. Reprints might be issued for philatelists, and these are
 not valid for postage

Return letter stamp - a label or stamp used on
 letters which are undeliverable

Revenue issue - a stamp intended for
 collection of taxes, fees, and duties for state revenue

RFD - acronym
 for 'Rural Free Delivery'

Rotary perforating machine - a wheel that
 operates with a grinding motion and usually results in rougher, slightly
 distorted perforations

Rotary press - a printing press that utilizes
 curved plates that rotate rapidly, printing on a continuous roll of
 paper. Stamps printed on a rotary press are usually longer or wider than
 the same stamps printed from flat plates because rotary plates stretch
 during the curving process

Rough perforation - perforations that show
 jagged holes. This usually denotes worn pins.

Roulette - a process by
 which paper is slit between stamps, making their separation easier

RPO -
 acronym for 'Railway Post Office'

Rural Free Delivery (RFD) - mail
 service that provides delivery to rural customers. The service was
 established in 1896. Prior to RFD, farm families traveled miles to the
 post office to pick-up their mail, all the while paying the same rates as
 those living in towns and urban areas. During the service's early years,
 the carrier postmarked the items. For decades Congress had been reluctant
 to institute free rural delivery, seeing the nation as too large for such
 a service and predicting financial disaster. RFD became an official part
 of the U.S. Postal Service in 1902.

Sample - a stamp produced by
 security printers to demonstrate the printing capabilities of their
 firms. Samples employed actual stamp designs in different colors, were
 usually overprinted or perfined to denote status, and were given to
 prospective clients at trade shows and philatelic exhibitions.

Scratched
 plate - a blemish on the plate caused by contact with a hard foreign
 object

Screen wagons - wagons built specifically to deliver mail. They
 were first used in 1886.

Se-tenant - stamps or labels printed from the
 same plate that adjoin one another but have different designs and colors


Sea Post Service - bona fide post offices that operated on ships
 traveling regular routes, primarily between 1891 and the 1930s


Self-service registration stamp - a stamp with the dual purpose of
 registration and special handling for use with letter packets and
 parcels. The stamps were issued in pairs from automatic vending machines
 with a certificate of posting. One stamp was affixed to the package; the
 other to the certificate as sender's evidence. They were used primarily
 in the German Democratic Republic, 1967-1968.

Semi-official envelopes -
 imprinted envelopes provided by the Confederate Government. Not everyone
 was granted franking privileges, however. 'Semi-official' envelopes, like
 the example shown here, required prepayment of postage in stamps.


Semi-official stamp - a stamp used in connection with private postal
 services but having official sanction. Examples include England's railway
 letter fee stamps and the U.S. Buffalo Balloon covers, which were
 delivered by a private balloon to the nearest post office, where franking
 continued through the regular postal service.

Semi-postal stamp - a
 postage stamp bearing a higher-than-normal postage rate. The excess
 revenue was given to charity or some other cause.

Separation - a general
 term applied to any means provided for separating stamps. The earliest
 and some more recent issues had no provision for this. Such stamps are
 usually called 'imperforate'. Many methods have been developed for
 removing individual stamps from sheets. These processes are termed
 'perforating' and 'rouletting'.

Serpentine roulette - a form of roulette
 consisting of wavy lines

Serrate roulette - a zig-zag line of short
 dashes

Sheet number - colored numbers printed consecutively on sheets of
 stamps which identify individual sheets as well the number of sheets
 printed

Silver tax stamp - a revenue stamp used to pay a tax on profits
 from transactions in silver

Sinking fund stamp - a stamp used for
 postage in France with a premium for the reduction of the national debt


Slogan - a postmark containing a message or announcement

Soldiers' stamp
 - a stamp issued to exempt servicemen's mail from postage

Souvenir sheet
 - a special postal issue, typically used to commemorate special events,
 which incorporates one or more stamps. It is produced on small format
 paper with wide margins, often printed with a unifying background and/or
 title. The stamps may or may not be perforated and usually differ in
 design and possibly denomination from each other.

Special delivery issue
 - a stamp that pays for special handling and accelerated delivery of
 mail, usually by a courier. Expedited services, such as Express Mail,
 have largely replaced the need for special delivery.

Special Delivery
 Service - a service authorized on March 3, 1885, which provided prompt
 delivery of all letters affixed with a 10-cent special-delivery stamp.
 The service extended to free-delivery offices in towns of 4,000 or more
 inhabitants. By August 4, 1886, every free-delivery office, including
 Rural Mail Service, was equipped to handle special-delivery letters.


Special flight stamp - stamp for use on mail carried on special flights.
 Usage: Netherlands - inscribed Bijzondere Vluchten; Switzerland -
 inscribed Pro Aero. PTI, 1987.

Special handling stamp - a stamp
 supplementing the fourth-class postage rate so that fourth-class mail was
 handled as first-class

Speed mail -

Square perforations - small, square
 holes, which are quite rough in appearance

Stamp classifications - a
 system by which all stamps are organized and defined according to their
 functions or type of authority controlling their issue

Stamped envelope
 production - a technique using a resilient plate instead of a rigid one.
 This technique allows the paper to be forced into the depressions of the
 die to show as a colorless relief on the finished stamp.

Star route - a
 mail route, usually rural, served by a private contractor. The routes
 pre-dated RFD (Rural Free Delivery). The postmaster general was allowed
 by Congress to form contracts with private delivery services without
 specifying the mode used for the deliveries. To identify these routes, an
 asterisk was placed on the Post Office Department records. Consequently,
 they became known as 'star routes'.

Stock transfer stamp - a revenue
 stamp tax on stock transfers and certificates which was used by federal
 and state authorities from 1918 until 1952

Sunday delivery stamp - a
 stamp used on mail delivered on Sundays and public holidays, the revenue
 from which was used to maintain a sanatorium and rest homes for postal
 employees and their families. The Sunday delivery stamp was used in
 Bulgaria, 1925-1929, and in 1942.

Surcharge - an overprint on the face
 of a stamp which changes, adds to, or confirms its face value

Talking
 stamp - an issue of seven plastic, self-adhesive stamps in form of
 miniature gramophone records which played the national anthem and gave
 commentary on history of the country. The stamps were issued in Bhutan, a
 country in the eastern Himalayas, on April 15, 1973.

Tax Paid stamp - a
 revenue stamp used to indicate tax payment on various commodities. The
 Tax Paid stamp did not indicate money value. Rather, it stated quantity
 or weight.

Telegraph stamp - a service-fee stamp that confirmed payment
 or exemption from payment for delivery of a telegraphic message. The
 English and Irish Magnetic Telegraph Company issued what were probably
 the first telegraph stamps in 1853.

Telegraph stamp - adhesive or
 imprinted revenue stamp paying the cost of a telegram; usually attached
 to or forming part of the message form

Tete-beche - a condition created
 in plate production, either accidentally or intentionally, in which the
 stamp design is inverted in alternate vertical or horizontal rows. This
 results in pairs of stamps in which the adjacent stamp is upside down in
 relation to the other.

Tobacco sale tax stamp - a revenue stamp intended
 to pay tax on sale of tobacco above quotas established in Agriculture
 Adjustment Act of 1935. Like potato tax stamps, it was declared
 unconstitutional.

Topical collecting - a strategy for collecting stamps
 which uses subject matter as the organizing theme

Tour Number - 'Tour
 number' is post office slang for 'shift.' Tour 1 is generally from 10:30
 p.m. until 7:00 a.m., Tour 2 runs from 7:00 a.m. until 3:30 p.m., and
 Tour 3 starts at 3:30 p.m. and runs until midnight. These times may vary
 by facility and by era. Highway Post Offices had 'trips', while Railway
 Post Offices used 'train'. Stationary units such as terminals, transfer
 offices, and airmail facilities referred to 'tours'. Conveniently enough,
 all three were abbreviated "TR" and had a type piece inserted into the
 handstamp to designate when an item was postmarked. All three also used
 the convention that the date in the handstamp corresponded to when the
 "TR" started. So if a trip, train, or tour started on day one and
 continued into day two, the date associated with day one stayed in the
 handstamp for the entire duration.

Typography - printing method done by
 pressure, the ink lines being impressed into the paper so that they
 appear raised on the back of the stamp. This is also referred to as
 'letterpress' or 'relief' printing.

Unappropriated Duty stamp - popular
 name for British fiscal stamps which left space in the design for the
 overprint of the specific purpose or duty

Unemployed Intellectual stamp
 - a postage stamp whose revenue helped support unemployed intellectuals
 and artists. This stamp was used in France (1935-1940) for intellectuals
 and in Hungary (1940) for artists

Unissued stamp - a stamp officially
 prepared for postal use but never issued due to, for example, an error in
 design or inscription, sudden change in political regime, or postal rates


United Postal Union - an institution originally known as the General
 Postal Union (established in 1874 and renamed in 1878). The Universal
 Postal Union coordinates postal policies among member nations.

UPU -
 abbreviation for the Universal Postal Union. Originally known as the
 General Postal Union (established in 1874 and renamed in 1878), the
 Universal Postal Union coordinates postal policies among member nations.


USPS - abbreviation for the U.S. Postal Service. The U.S. Post Office
 Department was reorganized in 1971. As a part of the transformation, it
 was renamed the 'U.S. Postal Service'.

V-Mail - service used from June
 15, 1942, to April 1, 1945, which facilitated swift and easy
 communication between troops and the home front. Individuals used special
 pre-printed forms for messages that were reduced to microfilm, flown to a
 v-mail facility nearest the addressee, and printed out to one-forth the
 size of the original.

Vehicle Service - a service created on October 19,
 1914. Prior to that time, the Post Office Department contracted with
 privately owned companies to provide and operate motorized vehicles
 carrying mail. After 1914, the Post Office Department purchased its own
 vehicles and hired its own drivers.

Vending machine stamp - stamp
 designed or printed for sale in coin-operated machines. These stamps may
 differ from ordinary postage in perf varieties, and they tend to be small
 format size.

Vignette - the primary design area of a stamp

War stamp -
 a stamp issued during wartime to raise revenue for the war and inscribed
 or overprinted as such. The stamp was applied in addition to the regular
 postage.

Watermark - a pattern or design within the substance of the
 paper which is impressed in the wet paper pulp during the manufacturing
 process. Some stamps are printed on watermarked paper to prevent
 counterfeiting, identify the paper manufacturer, or identify different
 stamps or postal stationery.

Wiper marks - wavy smears found across
 whole sheets of stamps. Over-inking of the plate or a slow mechanical
 wiper can cause this result.

ZIP+4 - the last four digits in ZIP+4. The
 addition four digits more precisely pinpoint the final destination.
 Larger mail volumes, increasing numbers of delivery addresses, and the
 adoption of automated machinery made ZIP+4 a necessity in 1983.

Zone
 Systems - a means of organizing mail using a zoning address system of one
 or two numbers in the hundred twenty-four largest post offices.
 Individuals added the zone code between the city and state, such as New
 York 4, New York. The numbers represented the post office or sub-post
 office closest to the final delivery address.

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Stamp Collecting Terminology

@auxiliary mark
Secondary or supplementary marking that requires the
mailer or addressee to take further action on a piece of mail; for
example, a mark which notifies the recipient of postage due.

@airmail Stamp
Stamp issued specifically to prepay postage for mail carried by air.

@approvals
"Look before buying" opportunity where stamps are sent to a collector for
examination. Approvals offer the collector a wide range of material to
choose from and must be bought or returned to the dealer within a
specified time

@block
Four or more attached stamps forming a square or rectangle.

@booklet panes
Small, specifically-printed sheets of stamps sold in a booklet format.

@cachet
Illustration or description on an envelope denoting the commemorative
purpose for which it was mailed.

@cancellation
Any mark applied to a stamp to prevent its reuse.

@centering
The position of the design on a stamp. On perfectly centered stamps, the
design is exactly in the middle.

@coil stamp
Stamp produced in a roll for use in vending machines. Usually identified
by a pair of straight edges on opposite sides.

@commemorative stamp
Stamp issued specifically to honor a person, place or event; usually on
sale for only a short period of time.

@commemorative sheet
A small sheet of stamps bearing a commemorative inscription.

@cover
An envelope, postcard or any other wrapper used to mail correspondence.

@cut square
The cut corner of a postal stationery item (envelope or postcard) bearing
the imprinted stamp with ample margins.

@definitive
Stamp issued for ordinary postal use that remains on sale for an extended
period of time.

@denomination
The monetary value printed on a stamp.

@die
The stamp design is engraved on this small flat piece of soft steel used
to print the stamp.

@duck stamp
Issued annually since 1934, these U.S. duck hunting permits help finance
the federal waterfowl program.

@embossed envelope
An envelope bearing a postage stamp with raised surface designs printed on
the envelope itself.

@error
Hhighly-collectible stamps because of  something incorrect in their design
or manufacture.

@first day cover
Envelope or card postmarked on the affixed stamp's first day of use.

@first flight cover
Envelope or card carried on the inaugural mail flight between two points.

@grill
Series of small dots embossed on a stamp allowing ink from the postmark to
sink in, thus preventing cleaning and reuse of the stamp.

@gum
The coating of glue on the back of an unused stamp.

@Hinges
Small gummed, glassine strips used to affix stamps to album pages.

@imperforate stamp
Stamp collecting terminology for a stamp bearing straight edges on all
four sides.

@invert
Stamp with one part of its design upside down in relation to the rest of
the stamp.

@mint
Stamps in original unused condition, never canceled.

@mint sheet
An entire sheet of stamps in original unused condition.

@official stamp
Stamp valid solely for government agency use.

@overprint
Any printing added to a stamp after the original printing was completed.

@pair
Two unseparated stamps joined either vertically or horizontally.

@perforations
Holes punched between stamps on a sheet to facilitate separation.

@perforation gauge
A device that measures the number of perforations on a stamp per two
centimeters.

@philately
Technical name for stamp collecting.

@pictorial
Stamp that features a view such as a landscape or seascape, rather than a
portrait, coat of arms or other symbolic design.

@plate block
Four or more attached stamps still fastened to the margin on which the
number of the printing plate is inscribed.

@postal stationery
Envelopes, cards or other covers bearing imprinted or impressed stamps.

@postmark
Marking on a postal item recording the date and/or origin of its transit
through the mail system.

@precancel
A stamp canceled by the post office before it is sold.

@revenue stamp
Any stamp that indicates payment of a tax or fee.

@rouletting
The use of slits or cuts between stamps to facilitate separation.

@self-adhesive
A stamp with a pressure-sensitive adhesive that does not require
moistening to affix the stamp to paper.

@selvage
uunprinted paper around panes of stamps, sometimes called the margin.

@semi-postal
Stamp from which all or part of the sales receipts go to charity or other
causes.

@se-tenant
Term describing adjoining stamps that differ from each other in design,
denomination or some other aspect.

@surcharge
Overprinting, altering or establishing a stamp's face value.

@tab
Illustrated or descriptive label attached to a stamp.

@tongs
Metal tweezers used for safe and easy handling of stamps.

@topicals
A group of stamps with the same theme, such as space travel or Disney
cartoons.

@unused
A stamp with no cancellation or other sign of use.

@used
A stamp that has been canceled.

@watermark
Design or pattern in paper formed during the
manufacturing process, valuable as a security precaution against forgery.

W@atermark detector
A method of safely determining the existence of a watermark by placing a
stamp in a tray filled with special fluid.



Drop Letter
Letters dropped at post office, not for transmission by mail, but for delivery only.