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 ...

Stamps as an investment in collectibles has long been an attractive way to diversify a portfolio by very wealthy individuals. There is no one better example than Bill Gross to illustrate someone who ...

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 ...

The infamous Inverted Jenny, one of the most collectible stamps in the world, has set a new auction record for a U.S. stamp, with a $2 million sale at New York’s Robert A. Siegel Auction Galleries.

History, intrigue and a misprint combine so that a single stamp has sold for $2 million at auction. What is it? Well, at the basic level, it is a U.S. postage stamp from 1918. But this stamp's got ...