Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3

Soviet Union Stamps of 1941-91

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Start price: $500

Buyer's premium:

1961, Yuri Gagarin Space Flight, 6k blue, violet and red, stamp with label at bottom, miniature sheet of 15 stamps and 15 labels, nice and post office fresh, full OG, NH, VF and scarce, I. Kirzhner certificate, Est. $800-$1,000 , Sc. #2464 var