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

Soviet Union Stamps of 1924-40

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Start price: $200

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1940, Reunification of Western Byelorussia and Ukraine with the USSR, 10k deep rose, top sheet margin vertical pair and right sheet margin single, each one imperforated at margin side, neatly cancelled, mostly VF, Est. $300-$400 , Sc. #767 var