Here’s something for serious stamp collectors only. This summer, philatelists will have a chance to snag the rarest US stamp ever: the 1868 one-cent “Z-grill.” Interested? It’ll cost you (more than) a ...

UNDATED (CNN Newsource/WKRC) - The rarest stamp known to still exist in the United States is set to go to auction and is currently expected to sell for millions of dollars. It's the 1868 One-Cent ...

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 1868 One-cent Z Grill stamp is one of only two known surviving copies, and the only available to collectors. (Robert A. Siegel Auction Galleries) Famed bond manager Bill Gross is selling out of a ...

If you've ever come across an old stamp collection and wondered if it might be worth something, you're not alone. Collecting vintage stamps isn't just a charming pastime-it can also uncover hidden ...

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 ...

Many collectors today wonder if postage stamps are good investments. While some rare and historical stamps have increased in value over the years, the market can be very unpredictable. Factors like ...