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

Soviet Union 1923-91

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Start price: $75

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1970, Philatelic Exhibition dedicated to 100th Anniversary of the birth of Lenin, two souvenir sheets of 20k red, black and gold, type I (parallel lines and thick text), separated and joined ”00” variety, full OG, NH, VF, Est. $150-$200, Scott #3711 var