C3 24c Jenny tied by First Flight May 15, 1918 Washington Airmail Service cancel on #10 size cover with Aerial League corner card. Some minor staining, catalog value $800.00. (Image)

Est. $250-400

C10 10c Lindbergh, unlisted possible Charles Rutkoff (addressee) hand drawn "of the period" cachet in red and blue. The first we have seen and probably unique. (Image)

Est. $150-175

C10 10c Lindbergh unlisted, 1st Raymond Bahr rubber stamped cachet in purple, single tied by unofficial Springfield, IL. cancel, serviced by Bahr and typed addressed, scarce. (Image)

Est. $125-150

C10 10c Lindbergh Planty #2, A.E. Gorham cachet in red and blue, tied by Little Falls MN cancel. (Image)

Est. $75-100

C10 10c Lindbergh unknown rubber stamped cachet in purple with unofficial Air Mail Field, Chicago cancel. Typed addressed to Raymond Bahr. (Image)

Est. $100-125

C16 5c Winged Globe tied by Washington, DC hand cancel, typed address, neatly open at top. Brookman value $175.00. (Image)

Est. $75-100

C17 8c Winged Globe unlisted, Unknown "Old Ironsides" cachet in blue and brown, U.S. Frigate Constitution cancel. (Image)

Est. $75-100

C17 8c Winged Globe on attractive Air Mail cover with rubber stamp cachet and unofficial U.S. Frigate Constitution cancel, the first we have seen in 40 years. (Image)

Est. $100-125

C18 50c Zeppelin with rubber stamped cachet in black, FIRST DAY Chicago IL 10/7/33 cancel flown to Akron with Akron, OH back stamp. Catalog value $250.00, seldom seen First Day City. (Image)

Est. $100-125

C18 50c Zeppelin Planty #4, Anderson cachet in black with New York, NY. October 2, 1933 machine cancel, clean and seldom seen. (Image)

Est. $200-250

C18 50c Zeppelin Planty #5B, Harry Ioor cachet in red and black, SCARCE PAIR tied by New York NY cancel. (Image)

Est. $200-300

C18 50c Zeppelin Planty #9, Aerophilatelic Club of NY cachet in blue tied by New York First Day cancel. (Image)

Est. $200-250

C19 6c Winged Globe tied by First Day June 30, 1934 Baltimore, MD. cancel with additional 2 cent value tied by Baltimore cancel, catalog value $200.00. (Image)

Est. $100-125

C19 6c Winged Globe Planty #3, blue rubber stamp cachet, unofficial Newark, N.J. A.M.S. cancel, signed by P{ostmaster, addressed. (Image)

Est. $75-100

C20 25c China Clipper unlisted, unknown "of the period" cachet printed in red and the first we have seen in 40 years. (Image)

Est. $125-150

C20 25c China Clipper tied by San Francisco, CA. hand cancel, Gundel hand paintet add-on cachet in red and blue, signed by Gundel. (Image)

Est. $100-150

C20 25c China Clipper Planty # 20, Espenshade folded card cachet in red with map, scarce and the 1st we have offered since 2002. (Image)

Est. $125-150

C20 25c China Clipper Planty #20, Espenshade cachet, folded card with red text and Pacific map with single tied by San Francisco, CA. to HAWAII, seldom seen, seldom offered. (Image)

Est. $125-150

C21 20c China Clipper unlisted, Gundel "add-on multicolor cachet, signed by Gundel and seldom seen. (Image)

Est. $100-150

C21-22 20c-50c China Clipper Planty #18, set of two Glen Evans cachets printed in red, blue, and black, typed addressed to Evans and seldom seen. Only the 3rd set we have offered with sales over $300.00. (Image)

Est. $200-250

C21-22 20c-50c China Clipper set of two covers, Planty #44, Imperial Stamp Co. cachet in black, matched set of BLOCKS OF FOUR, scarce. (Image)

Est. $125-150

C22 50c China Clipper Planty #41B, Crosby thermographed cachet in red for the 50c value. An extremely scarce and early Crosby airmail. (Image)

Est. $150-200

C23 6c Eagle Holding Shield Planty #21, Glen Evans cachet, set of 2 covers, few produced. (Image)

Est. $60-75

C24 30c Winged Globe unlisted, Beardsley printed "of the period" cachet in blue, typed addressed to Beardsley and sent via Special Delivery, very scarce. The first we have offered since 2000 and very few produced, probably less than 25. (Image)

Est. $200-250

C24 30c Winged Globe Planty #22, Glen Evans cachet, less than 50 produced, scarce. (Image)

Est. $100-125