Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 36:
1927, Yukon Airways and Exploration Co. Ltd, reversed image die proof of 25c in black, printed on thick card, size 98x75mm, perfect condition, no gum as produced, NH, VF, Unitrade C.v. CAD$450, Est. $100-$120, Scott #CL42
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