British Guiana 1c Magenta is described as ‘holy grail of philately’ and ‘Mona Lisa of stamp world’
The world’s rarest stamp is returning to Britain permanently for the first time in 143 years.
The British Guiana 1c Magenta (1856), which has been described as “the Mona Lisa of the stamp world”, was bought for $8.3m (£6.2m) by the rare stamp dealer Stanley Gibbons at auction last month.
