Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - China - 1929, Second Air Post issue, Curtiss Jenny over the Great Wall, 10c-90c, complete set of five with ''Funny Propeller'' cancellation and two Pioneer Flight covers by C.N.A.C. Nanking - Shanghai (1929) and Canton -Wuchow (1931), each one franked by two stamps, including No.C6, in addition air label Terra Asia, Shanghai, mostly VF, Est. $250-$300, Scott #C6-10