Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1

Canada - Pence issues

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Start price: $75

Buyer's premium:

1851, Prince Albert, top margin imperforate trial color proof of 6p in gray blue, vertical SPECIMEN overprint in carmine, printed on India paper, no gum as issued, VF, Unitrade #2TCxi, C.v. CAD$500, Est. $150-$180, Scott #2