Overprint

An overprint is any text, design, or marking applied by printing on top of a stamp that has already been produced. Overprints serve many practical purposes: they can adapt stamps for use in a different country, change a stamp’s designated purpose (such as designating it for airmail or official use), mark a provisional period of use, or commemorate a special event. Unlike a surcharge — which is a specific type of overprint that changes a stamp’s face value — a plain overprint does not alter the denomination; it merely adds information to the existing design.

Why Overprints Are Applied

New countries and territories are one of the most common drivers of overprinting. When a country gains independence or changes name, it frequently does not have time to print entirely new stamp issues before the transition. Existing stamps — often from the colonial power — are overprinted with the new country’s name or a national symbol. British stamps overprinted for use in overseas territories and offices were common throughout the 19th and early 20th centuries: stamps overprinted “Morocco Agencies,” “Levant,” “Br. Columbia & Vancouver Is.,” and dozens of others exist, all starting from British definitive issues of the time.

Occupation stamps arise when a territory is occupied during wartime. Stamps of the occupied country, or of the occupying power, are overprinted to indicate new postal authority. German occupation overprints on stamps of occupied territories during both World Wars are extensively collected. Japanese occupation overprints on Malayan and other Pacific stamps from 1941–45 are a major specialty.

Provisional use occurs when there is a temporary shortage of a needed denomination. Rather than wait for new stamps to be printed, postal authorities overprint available stocks. These provisionals are often short-lived, produced in limited quantities, and among the most collectible overprinted items.

Airmail designation: early airmail routes often used regular surface-mail stamps overprinted with “AIRMAIL” or similar text, before dedicated airmail issues were designed.

Official stamps for use by government departments were sometimes created by overprinting standard stamps with “OFFICIAL,” “O.H.M.S.” (On His Majesty’s Service), or departmental names.

Famous Overprint Examples

The British stamps overprinted for use at British Post Offices in Morocco (the Morocco Agencies issues) span from 1898 to 1956, covering multiple reigns and offering enormous scope for the specialist. Indian princely states — including Jind, Nabha, Patiala, and Gwalior — created extensive series by overprinting British India stamps with their state names.

The 1922–23 Irish Free State issues began as British Dollard-printed stamps overprinted in Irish, before Ireland produced its own designs. These transitional issues are foundational to Irish philately.

Double Overprints and Errors

A double overprint occurs when a stamp passes through the overprinting press twice, producing two impressions — sometimes offset slightly. Double overprints are major errors and command significant premiums. Inverted overprints (upside down relative to the stamp design) occur when a sheet is fed backwards through the press and are similarly prized. Both types must be expertised carefully, as they are among the most frequently forged varieties in philately.

Forgery Risks

Overprints are inherently easier to fake than a complete new stamp printing. A common low-value stamp with a forged overprint can be presented as a rare variety. Collectors of overprinted material should seek expertisation certificates from recognised bodies (RPSL, Philatelic Foundation, BPA Expertising) for any item of significant value, and should study the typography, ink colour, and precise positioning of genuine overprints as documented in specialised handbooks.