Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 272:
Description
1860, Queen Victoria, imperforate plate proof of 10c reddish brown, top margin block of four printed on India paper and mounted on card, green vertical ”SPECIMEN” overprint, types C-D, no gum as produced, VF, Unitrade #9P iv, v, C.v. CAD$500, Est. $150-$180, Scott #9
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