C1-C3 on Dec 21, 1918 government flight w/ special violet Air Mail Service cancel (AAMC 110f), attractive colorful cover, light soiling (mostly on back), 1986 PF Cert "genuine usage", ex-Philip Silver (Image)

Est. $150-200 SE

C4-C6 tied by violet June 3, 1924 Maywood IL "Manager US Air Mail Field" in clock dial hand cancels w/ violet winged official handstamp at left, attractive colorful cover, VF, ex-Philip Silver (Image)

Est. $140-180 SE

C5 Blk on Aug 21, 1923 NY to Los Angeles flight w/ magenta winged official air mail handstamp w/ "Night Air Mail" below, AAMC #162, VF, ex-Philip Silver (Image)

Est. $150-200 SE

Abt (200) first flights 1920s-30s; simple to elaborate cachets, most appear to be domestic w/ variety of frankings & locations; also a few events or regular airmail covers (Air Races, Visit of Zeppelin); some flap marks, gen F-VF (Image)

Est. $140-180 B

Accum abt (45) 1926-49 (largely 20s-30s), all w/ handstamped cachets & largely first flights; incl (2) 1933 Zeppelin flights (from Miami & Akron) w/ C18, few flts but gen F-VF (Image)

Est. $150-200 B

(25) mostly US incl 1925 airship Los Angeles, 1931 airship Volunteer, (14) 1931-33 Akron & Macon, (3) 1933 Graf Zeppelin, 1936 & 1957 rockets; foreign incl Germany 1936 Hindenburg, France 1935 rockets (2), Belgium 1935 rocket; gen F-VF (Image)

Est. $200-250 B

Accum abt (500) air covers of all kinds 1920s-50s incl simple hand stamped cachets, flights, clipper, events, censored, special delivery, personal, comml & much more, some natural flap marks & a few other flts to F+ (Image)

Est. $250-350 B

C1-C6 1918-30 group of (27) incl AAMC #104a & 110e; 1924 Guam to MI w/ San Francisco to Chicago portion by night flight; July 15, 1918 C3 w/ 400A; July 29, 1918 C2 on 3¢ U436; more; some C1 oxidizing, some file folds (not affecting stamps) & some typical light aging but gen F-VF (Image)

Est. $250-350 LE

Clipper flights to or from Canton Island, Guam, Hong Kong, Honolulu, LA, Macau, New Caledonia, Philippines, mostly hs cachets, a few flts to gen F-VF (Image)

Est. $600-700 B