Few specimens exist today, and none have been up for auction since the last one sold for upward of $400,000. The 1851 12d Black Empress is far from the rarest Canadian stamp, but it still commands ...

An ultra-rare U.S. postage stamp is going under the hammer this summer — and it may fetch as much as $5 million. Robert A. Siegel Auction Galleries in New York recently announced that it will be ...

once famously featured in an episode of the Simpsons A rare US postage stamp has sold for $2m (£1.63m) in a New York auction, setting the record for the most expensive single US stamp sold.

An $8.3m (£6.2m) stamp is returning to the UK for the first time in 143 years, after being sold at auction to a British rare stamp dealer. The British Guiana 1c Magenta was bought by rare stamp ...