Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 3

Soviet Union

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Start price: $200

Buyer's premium:

1924-25, definitive issue, peasant 2k green, typo printing, bottom left corner sheet margin imperforate block of 10 (5×2), misplaced double impression with second control line and text above stamps, two invalidating perf lines, full OG, NH, VF and a spectacular piece, Est. $400-$500, Scott #277 imp