Only 13 of the 1948 Gandhi 10 - rupee Purple Brown and Lake 'Service' stamps are in circulation.
The block of four was sold to a private Australian collector for the highest ever price for Indian stamps, said UK - based dealer Stanley Gibbons. The Indian stamps were particularly rare owing to the fact they were in a set of four.
From the issued sheet, supplied to the Governor - General's Secretariat, only thirteen single examples are authoritatively recorded, including this strip of four and a block of four in the Royal Philatelic Collection, owned by Queen Elizabeth II, which is believed to be the world's largest and most valuable private stamp collection, Gibbons said in a statement.
"The recent sale follows that of another Indian philatelic rarity, the famous 'Four Annas', which sold in March this year for almost 110, 000 pounds, " the statement said.
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