Great Britain 1856 4d carmine on thick blued highly glazed paper Plate 1, SG63s
Great Britain 1856 4d carmine on thick blued highly glazed paper Plate 1, (Watermark Medium Garter), SG63s.
A superb unmounted mint bottom marginal block or four showing part sheet inscription, overprinted "SPECIMEN" type 2 vertically.
A stunning quality scarce position piece. "SPECIMEN" examples were used solely by postal administrations for reference purposes to help spot any attempted forgeries.
GB Specialised Catalogue No: J48 (2)t.
Stanley Gibbons catalogue value: £4800++.
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