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

Soviet Union

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Start price: $300

Buyer's premium:

1976, Caucasus Flowers, 4k multicolored, left sheet margin horizontal imperforated pair, full original gum with tiny water stain on the left stamp, NH, VF, suggested retail is $2,400, Scott #4508 imp