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 ...

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 ...

A Naples resident was responsible for selling a lucrative stamp collection. The most prestigious stamp sold for over $4 million.

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 ...

The Love stamp series is a staple of American correspondence, the stamps often used for love-based events such as weddings.