Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 418:
Description
1859, Beaver, two imperforate proofs of 5c in vermilion or in brown red, the last one with diagonal overprint SPECIMEN in carmine, printed on India paper, no gum as produced, VF, Unitrade #15P, TCiii, C.v. CAD$750, Est. $150-$200, Scott #15
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