1937 China Clipper First Flight Cover Hawaii to Macao, April 23

Airmail cover flown on the April 23, 1937 leg of the China Clipper from Honolulu to Macao. Features purple cachet for the Hawaii Macao segment of the FAM 14 route, with clear Honolulu postmark and Macao receiving mark on reverse. Franked with 50 airmail stamp and addressed to New York. Light toning along the flap from original gum.