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:

1943, Tehran Conference, 3r indigo, blue and red, unfolded block of four with blue color strongly shifted to the top on all stamps, full OG, NH, VF, Est. $300-$400, Sc. # 908 var