In 1948, the U.S. Post Office issued a 3-cent commemorative stamp marking the 100th anniversary of the movement in the United States.

Some letter writers may place this stamp marking the bicentennial of the French Revolution upside down on the envelope to correct what they think is a flaw.

In August, the four stamps marking the fifth South Pacific Games in Guam were the last before independence on 21 September 1975.

It is the eighth in a series of alphabet stamps marking the increases since 1978 and is known at the Post Office as the Hat, after Uncle Sam's lid.

New U.S. Issues Among the most striking designs scheduled are the stamps marking the bicentennial of the House of Representatives and the Executive Branch.

A new stamp marking the 400th anniversary of Kilkenny's upgrade from town to city status was issued by An Post on June 16, 2009.

Even the United States Postal Service got into the act, issuing a series of commemorative stamps marking the comic-strip centennial in 1996.

Originally intended as a commemorative stamp marking the adoption of Imperial Penny Postage in 1889, it was too long delayed, and is considered a regular stamp.

An engraver secretly altered the master die of a stamp marking the 100th anniversary of Yeshiva University.

The first issue of Tanzania proper was a set of four commemorative stamps marking the union, issued 7 July 1964.