1937 China Clipper First Flight Cover U.S. to Hong Kong, April 21

Airmail cover flown on the April 21, 1937 Pan Am China Clipper flight from San Francisco to Hong Kong. Multicolor printed cachet highlights the inaugural transpacific service via Hawaii, Guam, Manila, and China. Franked with 50 and 20 airmail stamps, with a San Francisco postmark and Hong Kong backstamp. Neatly addressed and well preserved. SKU: 6367-45190-20