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

People's Republic of China

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Start price: $30

Buyer's premium:

1969, Yangtze Bridge, 4f, 8f, 8f, 10f, complete set of four, no gum as issued, NH, VF, C.v. $110, Est. $60-$75, China Post No. W15, Scott #1101-04