A block of rare postage stamps, found hidden in a cupboard, could be worth up to £200,000 when it is sold at auction. The Penny Blacks, the world's first type of adhesive postage stamp, were ...
(CNN) – A block of the world’s second official postage stamp is going up for auction in May. It is expected to fetch millions of dollars. The Great Britain Two Pence Blue stamp of Queen Victoria was ...