Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2

People's Republic of China

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Start price: $200

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1968, Portrait of Mao over Orchestra and Chorus, 8f multicolored, top left corner sheet margin block of four, full OG, NH, VF, C.v. $640++, Est. $300-$400 , Sc. #990