Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 19:
Description
1919, Aero Club of Canada, large die proof of $1 in red, printed on white cardboard, size 85x107mm, no gum as produced, slight traces of previous mounts, VF and very rare, only 4 examples believed to exist, Unitrade C.v. CAD$2,000, Est. $1,500-$2,000, Scott #CLP3
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