The infamous Inverted Jenny, one of the most collectible stamps in the world, has set a new auction record for a U.S. stamp, with a $2 million sale at New York’s Robert A. Siegel Auction Galleries.

The only One-cent “Z” Grill available to collectors that realized $4,366,000 On June 14th, Robert A. Siegel Auction Galleries sold the famous One-Cent “Z” Grill postage stamp for $4,366,000. This sale ...

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

An unspoiled copy of one of the rarest American stamps changed hands for a record $2 million on Wednesday, the New York auction house that sold the 1918 "Inverted Jenny" stamp said. The same stamp had ...