‘Mona Lisa’ of stamps sets €7m auction record

A one-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 at auction at Sotheby’s in New York for $9.5m (€7m). It is the fourth time it has broken the auction record for a single stamp in its history.

The stamp was expected to sell for $10-$20m. Sotheby’s said the buyer wished to remain anonymous. The price included the buyer’s premium.