Stanley Gibbons sells £495,000 ‘Holy Grail’ British stamp
It is only one of five used examples known to the world of philately March 14, 2016: Stanley Gibbons, the world’s pre-eminent prestige collectibles merchant, has sold one of Britain’s most iconic rare stamps, a ‘Plate 77 Penny Red’, for almost half a million pounds to a private collector. The £495,000 stamp is only one...