
A postmark is a
postal marking
A postal marking is any kind of annotation applied to a letter by a postal service. The most common types are postmarks and cancellations; almost every letter will have those. Less common types include forwarding addresses, routing annotatio ...
made on an
envelope
An envelope is a common packaging item, usually made of thin, flat material. It is designed to contain a flat object, such as a letter or card.
Traditional envelopes are made from sheets of paper cut to one of three shapes: a rhombus, a ...
, parcel,
postcard
A postcard or post card is a piece of thick paper or thin cardboard, typically rectangular, intended for writing and mailing without an envelope. Non-rectangular shapes may also be used but are rare. There are novelty exceptions, such as wood ...
or the like, indicating the place, date and time that the item was delivered into the care of a postal service, or sometimes indicating where and when received or in transit. Modern postmarks are often applied simultaneously with the
cancellation or
killer that marks postage stamps as having been used. Sometimes a postmark alone is used to cancel stamps, and the two terms are often used interchangeably. Postmarks may be applied by handstamp or machine, using methods such as rollers or
inkjets, while
digital postmarks are a recent innovation.
History

The first postmark, called the "Bishop mark", was introduced by English
Postmaster General Henry Bishop in 1661 and showed only the day and month of mailing to prevent the delay of the mail by carriers.
In England during the latter part of the 17th century, several postmarks were devised for use with the
London Penny Post, a postal system that delivered mailed items within the city of London. The postmarks bore the initial of the particular post office or handling house it was sent from along with a separate time stamp. Postage was prepaid and the postmark was applied to the mailed item by means of an inked hand-stamp. Some historians also consider these postmarks to be the world's first postage "stamps".
In the 19th century and early 1900s, it was common for letters to receive multiple postmarks, or
backstamps, indicating the time, date, and location of each post office transporting or delivering the letter, and this is still occasionally true. While almost every contemporary postmark includes a location as well as a date, in 2004,
New Zealand Post announced plans to eliminate the location on their postmarks and include only the date; however, information about this can be determined by a three-number code on the postmarks.
In Great Britain, the first postmark employed for the cancellation of the then new adhesive postage stamps was the
Maltese Cross
The Maltese cross is a cross symbol, consisting of four " V" or arrowhead shaped concave quadrilaterals converging at a central vertex at right angles, two tips pointing outward symmetrically.
It is a heraldic cross variant which develop ...
, so named because of its shape and appearance. This was used in conjunction with a date stamp which was applied, usually to the rear of the letter, which denoted the date of posting.

Different types of postmarks include
railway post offices (RPOs) and maritime (on-board ship) postmarks. Postmarks on
naval vessels during sensitive operations in wartime are sometimes "clean", showing less information than usual to prevent route of travel or other details from falling into enemy hands. Similar to this is the "censored postmark", overprinted with a black obliteration of the time and place of mailing, for similar reasons.
The
Pony Express
The Pony Express was an American express mail service that used relays of horse-mounted riders. It operated from April 3, 1860, to October 26, 1861, between Missouri and California. It was operated by the Central Overland California and Pik ...
used a variety of different
postmarks on the mail it carried across the Western United States. There are only 250 known examples of surviving Pony Express mail/postmarks in various collections today bearing one of more than a dozen different types of postmarks.
Hawai'i Post, a discontinued personal delivery service, once had a
surfboard
A surfboard is a narrow plank used in surfing. Surfboards are relatively light, but are strong enough to support an individual standing on them while riding an ocean wave. They were invented in ancient Hawaii, where they were known as ''papa he' ...
mail postmark, for covers that traveled by surfboard.
A colour postmark is on the United States Postal Service-issued collectible envelope commemorating the 2004
inauguration of
George W. Bush.

While postmarks are applied almost universally by or under the authority of the official postal department, service, or authority in the United States it is possible to receive "a permit to apply your own postmark", called a Mailer's Postmark Permit, and under certain conditions specified by the
private express statutes in the United States, a privately carried letter may be cancelled with a private postmark. Unofficial entities that issue
artistamps may use postmark-like markings as well.
Marcophily is the study of postmarks and there are many published work on postmarks covering the topic from before 1900, such as the
fancy cancels, until the present day. These include the so-called
fancy cancels of the United States to modern
machine postmarks.
Fewer postmarks are used now than previously, with the advent of
meter label
The metre (British spelling) or meter (American spelling; see spelling differences) (from the French unit , from the Greek noun , "measure"), symbol m, is the primary unit of length in the International System of Units (SI), though its prefi ...
s, some types of
computer vended postage, and
computerized postage that people can print from their own
personal computer
A personal computer (PC) is a multi-purpose microcomputer whose size, capabilities, and price make it feasible for individual use. Personal computers are intended to be operated directly by an end user, rather than by a computer expert or tech ...
s (called "PC postage" in the United States, these services have been offered by such companies as
Stamps.com
Stamps.com is an American company that provides Internet-based mailing and shipping services. Until its acquisition by Thoma Bravo Stamps.com was a public company traded on the NASDAQ exchange under the symbol STMP. The company's main offices ...
and
Neopost). These indicia are not always postmarked by the post office but if put into the mailstream later than the date listed on them, they are postmarked about 50% of the time. Because of this, it is a bad idea to try to use the date on your postage as a postmark.
An official example relating a
numismatic item to postmarks occurred on April 13, 1976 when the U.S. issued a new
two-dollar bill. People could buy the bills at face value, add a first class stamp (at the time 13 cents), and have the combination postmarked to show they were the first day of issue. Large numbers of these were produced and they remain common.
Ink colour
When the first universal postal system was started in the United Kingdom with its
Penny Black, the postmark used red ink for contrast. This was not successful, and the stamp was changed to non-black colours so that the postmark could use black ink.
The majority of postmarks today are in black, with red (particularly in the United States with local post offices' handstamps) following, though sometimes they are in other colours. This is particularly true in the case of pictorial postmarks if the colour in question has some connection to the commemoration.
Digital postmarks
In 2004 the
United States Postal Service
The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an Independent agencies of the United States government, independent agency of the executive branch of the Federal government of the Uni ...
announced plans to introduce first day digital colour postmarks to be used to cancel some first day covers for commemorative stamps in 2005 and this practice continued and was ongoing as of 2015.
Postmark advertisement
Singapore Post offers a "postmark advertising" service which, strictly speaking, applies to the "killer" rather than the postmark. Hungarian Post Co., Ltd. offers a similar service.
Unusual postmark techniques
There have apparently been some postmarks producing a stereoscopic or "3D" effect where a special viewer is required. They are considered more as a novelty than as a practical postmark. The
local post Hawai'i Post
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only ...
had a rubber-stamp postmark, parts of which were hand-painted.
At
Hideaway Island,
Vanuatu
Vanuatu ( or ; ), officially the Republic of Vanuatu (french: link=no, République de Vanuatu; bi, Ripablik blong Vanuatu), is an island country located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is east of no ...
, the Underwater Post Office has an
embossed postmark.
Valuation of cancellations
The study of postmarks is a specialized branch of philately called
marcophily. It may bring added value to the stamps by their historical significance. Other parameters are the rarity and the attractiveness. In particular, the stamps issued by the
Empire of Austria during the 1850–1867 period (the 5 issues before the Austro-Hungarian compromise of 1867), are collected for their variety and beauty. More details can be found in
Valuation of cancellations of the Austrian Empire The study of postmarks is a specialized branch of philately called marcophily. It brings added value to the stamps by their historical significance. Other parameters are the rarity and the attractiveness. In particular, the stamps issued by the Habs ...
.

A special or rare postmark can substantially add to the value of a stamp. Also, in addition to everyday postmarks there are postmarks indicating the
first day of issue of a particular stamp and
pictorial cancellation
A cancellation (or cancel for short; French: ) is a postal marking applied on a postage stamp or postal stationery to deface the stamp and to prevent its reuse. Cancellations come in a huge variety of designs, shapes, sizes, and colors. Modern ca ...
s commemorating local events, anniversaries, and the like' and slogan postmarks which advertise an event or pass information to the public. (There has been a recent change to the term "pictorial postmarks" rather than "pictorial cancellations" by the USPS.)
There are some examples of "faked covers" produced by philatelic forgers, most usually to increase their value, in which the postmark has been altered in some way; for example, by changing the date.
Practical uses
The postmark is often considered as an official confirmation that a cover (letter, packet, etc.) mailed item was mailed at a given location at a specific date. For example, the date of the postmark can be quite important. In the United States, the
Internal Revenue Service will still consider
income tax
An income tax is a tax imposed on individuals or entities (taxpayers) in respect of the income or profits earned by them (commonly called taxable income). Income tax generally is computed as the product of a tax rate times the taxable income. Tax ...
returns as filed on time though it receives them late if they are postmarked on time, and this date (with, perhaps, other
proof of mailing), may have significance in the context of legal filings and
proofs of service or
of delivery (though in this case the date may viewed as "on time" if the date of the postmark is no more than one day after the date service is supposed to have been made).
Postal voting ballots may be accepted in some places if postmarked by the date of the election, though other places require receipt by a certain deadline. Historically, postmarks, known as
backstamps were also applied to the reverse side of a cover to confirm arrival at the post office on a specific date.
Similar marks

A postmark should not be confused with the
killer which are lines, bars, etc. used to cancel a postage stamp. The killer acts as the
cancellation, though the postmark can also serve this purpose. Neither should a postmark be confused with
overprints generally, or
pre-cancels
A precanceled stamp, or precancel for short, is a postage stamp that has been legitimately Cancellation (mail), cancelled before being affixed to mail. A number of nations of the world use precancels, typically in the form of an overprint on defin ...
(stamps that have been cancelled before the
envelope
An envelope is a common packaging item, usually made of thin, flat material. It is designed to contain a flat object, such as a letter or card.
Traditional envelopes are made from sheets of paper cut to one of three shapes: a rhombus, a ...
or package to which they are affixed is submitted or deposited for acceptance into the
mailstream, they most commonly have taken the form of a pre-printed city name on the stamp) specifically, which generally do not indicate a date.
Flight
cachets, more or less elaborate rubber-stamps on an envelope indicating on which flight (typically a
first flight), a
first flight cover has traveled via
airmail
Airmail (or air mail) is a mail transport service branded and sold on the basis of at least one leg of its journey being by air. Airmail items typically arrive more quickly than surface mail, and usually cost more to send. Airmail may be th ...
, are in addition to the postmark and are not postmarks either.
Clubs
There are many clubs devoted to the hobby of collecting postmarks. One of those clubs is the
Post Mark Collector's Club The Post Mark Collectors Club is a non-profit, national organization that promotes the collecting of postmarks and the study of postal history. The Club sponsors an annual convention and the National Postmark Museum in Bellevue, Ohio.
The PMCC mai ...
, founded in 1946 and based in the USA. Another is the British Postmark Society, founded in 1958.
See also
*
Indicia (philately)
*
Postal marking
A postal marking is any kind of annotation applied to a letter by a postal service. The most common types are postmarks and cancellations; almost every letter will have those. Less common types include forwarding addresses, routing annotatio ...
*
Postal history
References
External links
Anonymous Postmark MailerBritish Postmark databaseWorld postmark primer: how to decipher dates*
ttp://members.tripod.com/~pennyreds/mystery.html A Mystery PostmarkLondon 2012 – New postmark kicks off 2012 day in London(backing London's bid to host
2012 Olympics)
Post Offices with Christmas Names of the United States Postal ServiceNovember 17, 2011, Postal Bulletin 22324 Philately Pictorial Postmarks Announcement* Museum
*
Post Mark Museum and Research Library* Precancels
*
* Clubs
*
Post Mark Collectors Club*
Bullseye Cancel Collectors Club*
British Postmark Society
{{Postal system
Postal systems
Postal markings
Philatelic terminology