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 ...

(CNN) — 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 ...

The United States Postal Service's newest stamp collection is finally here, transforming the iconic children's book Goodnight Moon into tiny illustrated works of art months after the postage ...

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 ...

Major stamp auctions are stellar events and none more so than the June 14-15 sale in New York of the key items from the Bill Gross collection, the most complete of United States postage stamp ...

Collecting stamps can be as easy as pulling a stamp off an envelope delivered by mail or as complicated as studying historical events to find a particularly rare or coveted one. Whatever the interest, ...