For over 180 years, we’ve been collecting stamps, and philatelists have put a high price on the rarest of the rare stamps ... is one of the most famous stamps in all philately. There are at least 86 ...

The stamp, seen here with Siegel Auctions President Scott Trepel, once famously featured in an episode of the Simpsons A rare US postage stamp ... sheet of 100. The one most recently sold is ...

The stamps turned out to be worthless, but Gross—determined to prove to his mother that postage could ... without a question, the most significant and most valuable collection of United States ...

Why is it precisely the flawed specimens that get stamp collectors so excited? And what has an uncle from Saxony got to do with all this? Our Havana-based colleague and author Michael Thoss has been ...