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Lot 622: 1931 & 1937 first flight covers (3), first two - China National A
Postage Stamps & Postal History of the World
November 10, 2016
Newcastle upon Tyne, United Kingdom
Description: 1931 & 1937 first flight covers (3), first two - China National Aviation Corp official covers Peiping - Nanking, second cover Nanking - Peiping, third 1937 April 26th CNAC/PAN AMERICAN Airways Shanghai - San Francisco special cover with blue cachet. (3)