1918 6c orange, three blocks of four, two stamps hinged, others n.h., some with disturbed gum and wrinkles at top, fine-v.f., cat. $1210 (Cat No. C1) (Image)

Cat. $1210, Est.$300

1918 6c orange, centerline block of four, n.h. and post office fresh, some natural gum skips and wrinkles at top, v.f., cat. $440 (Cat No. C1) (Image)

Cat. $440, Est.$200

1918 16c and 24c used on legal size "Aerial League of America" First Trip covers (May 15 and July 15), each with appropriate markings and accompanied by the Club letter, some tape stains and cover defects, otherwise fine, scarce, cat. $1550 (Cat No. C2,3) (Image)

Cat. $1550, Est.$500

1923 cover franked with 24c carmine and flown in 1925 from New York to San Francisco, re-used and re-franked with 8c green on reverse, v.f. and unusual cover (Cat No. C4,6) (Image)

Est.$150

1930 Zeppelin 65c-$2.60 set of three, n.h., post office fresh, v.f., cat. $1640 (Cat No. C13-15) (Image)

Cat. $1640, Est.$1,000

1930 $2.60 blue, used, well centered, v.f., with 2019 PFC stating "with light natural crease at right", cat. $550 (Cat No. C15) (Image)

Cat. $550, Est.$200

1930 65c-$2.60 Zeppelin, set of three, used on separate (April 19) Washington D.C. First Day Covers, first one with minor cover faults (stamp v.f.), fine-v.f. (Cat No. C13-15) (Image)

Est.$1,500

1925-44 Plate Blocks, with 20-50c China Clipper, 30c Winged Globe, Transport Plane 50c (11), plus a few others, n.h., mostly v.f., cat. $983 (Cat No. C16/31) (Image)

Cat. $983, Est.$200

1931 First Trans-Pacific Non-Stop Flight Tokyo to Seattle, mixed franking with Japanese stamp, signed by the pilots (Allen and Moyle), v.f. (Image)

Est.$150

1931 Wiley Post & Harold Gatty Record Circumnavigation, June 21 cover with 2c canceled at Mineola, N.Y, Berlin cds (June 24) and Russian cachets, one dated June 29, signed by Post and Gatty. This circumnavigation via Newfoundland, Greenland, Russia and Alaska completed in 8 days 16 hours in the "Winnie Mae" airplane (Image)

Est.$300

1925 "Los Angeles" to New York, cover franked with 5c Lexington-Concord, tied by violet Air Mail Service Mayaguez, P.R. cancel, boxed (misspelled) cachet "Via Air Ship Los Angeles Porto Rico to Lake Hurst, N.J." (Image)

Est.$150