Auction 90, Session 1 - Worldwide Rare Stamps and Postal History
Lot 478:
1860-63, Queen Victoria, imperforated proof of 10c in vermilion with green diagonal ”Specimen” overprint, inscribed margin block of four on India paper mounted on card, top stamps with thick overprint of type C, while bottom ones with thin overprint of type B, no gum as produced, VF, Unitrade #12P ii, i, C.v. CAD$200++, Sc. #12
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