51,000 were printed, and fewer than 150 are still around. The stamp is worth an estimated $547,464 adjusted for inflation ...

A 1-cent postage stamp from a 19th century British colony in South America has become the world's most valuable stamp - again. Sotheby's says the 1856 British Guiana One-Cent Magenta sold Tuesday at ...

Design file may contain any of the following: stamp designs; documents; correspondence; newspapers; articles; press releases; artists' guides; descriptions; designs ...