Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1
Lot 487:
Description
1899, imperforated plate proof of 5c in blue, bottom right corner sheet margin block of four printed on India paper and mounted on card, no gum as produced, NH, VF, Unitrade #79P, C.v.CAD$800++, Est.$250-$300, Sc. # 79
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