Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 812:
EXHIBITION STYLE COLLECTION: 1920, 140 mostly mint stamps (4 – used), including 58 mostly imperforate plate or trial color proofs, 25 imperforate singles and blocks in issued colors, 9 singles or multiples with control numbers, numerous perforation, paper and color varieties, perfect collection, full/large part of OG or no gum as issued, F/VF, Est. $500-$600, Scott #74-75, var
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