16 USA PAN-AM CLIPPER FIRST FLIGHT COVERS 1935-1941, 13 are cachet covers to and from San-Francisco to Hong-Kong with intermediate flights via Guam + Hawaii + New-Zealand, also 3 duplicate covers from New-York to Balama (Portuguese Guinea), retails over $300, F-VF est ($55+ US) (Image)

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6 PAN-AM CLIPPER FLIGHTS 1935-1941, includes a rare 1941 cover posted at the 3rd Defense Battalion Marines Post Office at Midway on MAY5,1941 with routing via Guam on MAY8th and Singapore on MAY10th, also a SEP12,1936 registered cover from the Philippines to Philadelphia via Honolulu and San-Francisco with a great Philippine franking #C52(4), C54(4), and C54-C56, lot includes 4 of the 1937 cachet FFC from various legs of the San-Francisco, Manila, Guam, Hong-Kong, and Macao flight, VF est ($55+ US) (Image)

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10 USA AIRMAIL FIRST DAY COVERS 1927-1937, includes cachet covers for #C20, C21, C24, CE1 (2 diff cachets), 649-650, plus non cachet covers for #C9 and C11, Scott cat is over $410, VF est ($75+ US) (Image)

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