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 ...

The postage stamp that started it all is going under the gavel. The coveted 18th-century rarity, known as the Penny Black, was the world’s first postage stamp and represents the very dawn of social ...

The Penny Black, dating from 1840, will be part of Sotheby’s “Treasures” sale on Dec. 7, the auction house announced Tuesday. This Penny Black was from the first sheet printed, the Australian ...

While investment quality stamps have a steady history of appreciation, their value at any one point in time is fairly well known. It is therefore important for someone buying stamps as an investment ...

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 ...

A collection of rare stamps which have been collecting dust in an attic for more than 100 years are now set to fetch at least a quarter of a million pounds at auction after being discovered. The 35 ...