The U.S. Postal Service today announced the stamp issues that will be premiered at the Boston 2026 World Exposition, the 12th ...

USPS announced it will release a new stamp in honor of the worldwide event that will be hosted across the United States, ...

Known as the world’s most valuable and rare stamp, this unique piece was produced during a stamp shortage in British Guiana. Only one copy is known to exist, discovered by a 12-year-old Scottish boy ...

The Smithsonian’s National Postal Museum opens its new William H. Gross Stamp Gallery to the public Sunday, Sept. 22. Named after its primary benefactor, it is the world’s largest stamp gallery and ...

The Smithsonian’s National Postal Museum will display the world’s rarest postage stamp. Beginning in April 2015, the 1856 British Guiana One-Cent Magenta will be prominently displayed in the museum’s ...

24c Curtiss Jenny inverted block of four, 1918 This upside-down blue plane within a red frame is the most famous U.S. stamp and one of the world’s most famous printing errors. Only one misprinted ...