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

Soviet Union

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Start price: $200

Buyer's premium:

1987, WWF, Polar Bears, 5k-35k, complete set of four in miniature sheets of eight, full OG, NH, VF, C.v. $600, Est. $350-$400, Scott #5541a-44a