C6, 24¢ carmine, VF, on a Registered Transcontinental air mail cover, dated Oct 13, 1924 from San Fransisco, CA to Philadelphia, PA, BS Oct 16, opened roughly at top (Image)

Est. 50

1929, American Air Meet, Jan 8, Miami, Fla, show cachet on red Roessler cacheted cover VF (Image)

Est. 40

1929-1947, National Air Races, lot of 10 diff, most with same cachet, but in different colors, incl 4 covers dated Sept 1 thru 4 1934, all addr, VF (Image)

Est. 60

1938 Air Mail Week, two covers: Villa Park, Illinois , #8 size, full front blue illus airplane with red text, to Los Angeles; Ayer, Mass, violet cachet, business size, to Fort Devens, signed by pilot Joseph Fluet

Est. 35