Blog

One of the world’s rarest stamps, a one-of-a-kind 1856 British Guiana one-cent Magenta, will be auctioned by Sotheby’s in June. The stamp is expected to fetch more than $10 million which would set a new world record and make it the world’s most valuable stamp.The current world record holder is the 1855 Swedish Treskilling Yellow which sold for $2.3 million in 1996. The only one of its type, the stamp was supposed to be green but a printing error rendered it yellow.Printing or perfora …