History of Aviation, Rare Stamps and Postal History of the World, Part 2

People's Republic of China

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Start price: $200

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1978, National Science Conference, 8f x3 multicolored, complete set of three and souvenir sheet with simulated perforation, full OG or no gum as produced (souvenir sheet), NH, VF, C.v. $509, Est. $250-$350 , Sc. #1381-83, a