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 ...

On June 14 and 15, 2024, Siegel Auction Galleries of New York City will offer the William H. Gross Collection of United States Stamps. This is, without question, the most significant and most valuable ...

An ultra-rare U.S. postage stamp is going under the hammer this summer — and it may fetch as much as $5 million. Robert A. Siegel Auction Galleries in New York recently announced that it will be ...

A one-cent postage stamp from 1868 is expected to become the most expensive U.S. stamp ever sold when it heads to auction in June. Known as the “Z-grill,” the stamp is the most-valued piece of what ...

Undoubtedly, the rarest and most expensive German stamp ever sold at auction is the Baden 9 Kreuzer error stamp. The nitty-gritty of stamp collecting can be as ...

The most valuable stamp in the world, the British Guiana One-Cent Black on Magenta, failed to set yet another world record at auction. Despite great expectations, the British Guiana One-Cent Black on ...

Get your stamp book ready for the ultimate addition. This summer, Robert A. Siegel Auction Galleries is offering the William H. Gross Collection of United States Stamps. The organization is ...

A rare Inverted Jenny airmail stamp described as “the finest example” of its kind is headed for sale at Siegel Auction Galleries in New York, where it is expected to fetch US$1.5 million to US$2 ...

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 ...

Most of the time, a penny is worth just one cent, but in the case of the most valuable pennies, they can be worth thousands or even millions of dollars. If you're sorting through your pocket change, ...