China Covers and Cancellations Air MailInternational Trans-Pacific Flight: 1937 (21 Apr.) First Flight cover from San Francisco to Hong Kong bearing U.S 70c. air mail franking tied by San Francisco machine postmark with the commemorative handstamp in blue at left and, on the reverse, Hong Kong (28.4) and two Canton arrival c.d.s. (29.4). Fresh and fine. Ex James Starr and with his original album page
