Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2

Soviet Union 1923-91

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Start price: $75

Buyer's premium:

1944, Day of the United Nations 60k, a single with blue color omitted and red significantly shifted to the top, CTO with full OG (LH), VF, a common stamp is included, Est. $150-$200, Scott #921 var