Sudan 1951: 20 p. blue-green & black, a fine used example showing variety: ‘Overprint Inverted’ in black. A major rarity, the variety is only known in used condition. Cert. BPA (1961) Gi = £ 4'000.
http://ift.tt/1Lx6ldA
Sudan 1951: 20 p. blue-green & black, a fine used example showing variety: ‘Overprint Inverted’ in black. A major rarity, the variety is only known in used condition. Cert. BPA (1961) Gi = £ 4'000.
http://ift.tt/1Lx6ldA
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