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

Soviet Union 1923-91

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Start price: $150

Buyer's premium:

1983, Feodor Tolstoy, 4k multicolored, top sheet margin imperforate single used together with definitive stamp of 6k on registered FDC in Moscow, tied by ”5.1.83” Moscow General PO ds, arrival marking is on reverse, VF and scarce, Est. $300-$400, Scott #5115 imp