C7 10c Map Planty #2, A.C. Roessler corner card in blue, tied by Detroit MI cancel, open bottom and scarce. (Image)

Est. $125-150

C8 15c Map unlisted, unknown cachet in red type on blue envelope, Washington, D.C. cancel with Philadelphia (9/18) and Chicago (9/19) backstamps. (Image)

Est. $125-150

C8 15c Map, uncacheted, Washington, D.C. cancel flown via Night Air Mail to Chicago, with Chicago back stamp 9/19/1926 and 9/20/1926. (Image)

Est. $75-90

C10 10c Lindbergh with Chicago, IL. first day cancel on Canadian postal stationery tied by same day June 18, 1927 Windsor, Ontario machine cancel, Emil Klehn cover, open right side and rare! (Image)

Est. $125-150

C10 10c Lindbergh Planty #1, Griffin cachet in red and blue, single tied by St. Louis, MO. machine cancel, addressed to H.H. Griffin and seldom seen. (Image)

Est. $150-200

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

Est. $75-100

C11 5c Beacon Planty #5, Floyd Shockley rubber stamped cachet in purple, single tied by Washington DC hand cancel with additional 3c precancelled postage due on front of cover, backstamped and typed addressed. (Image)

Est. $200-250

C12 5c Winged Globe unlisted, Unknown rubber stamped cachet in black, addressed. (Image)

Est. $60-75

C12 5c Winged Globe unlisted, add-on cachet of bi-plane, addressed. (Image)

Est. $60-75

C12 5c Winged Globe, pair tied by Washington FDOI. Rare foreign destination to Germany. The first we have offered. (Image)

Est. $75-90

C12 5c Winged Globe Planty #9, unknown cachet of map on card with added typed text describing the C12 First Day, seldom seen. (Image)

Est. $100-125

C13 65c Zeppelin unlisted, A.C. Roessler cachet printed in orange and black on card stock with single tied by Washington, DC. First Day machine cancel and flown the ENTIRE ROUND TRIP with additional C13 single tied by May 25th Rio de Janeiro hand cancel! The first such franking we have ever seen all on an extremely rare Roessler cacheted FDC also the first we have seen for this issue! A must for the Zeppelin specialist and fantastic exhibit item. Addressed to George Reynolds, NY. outbound and to him again in Rio de Janeiro, pristine and possibly unique. (Image)

Est. $2,000-2,500

C15 $2.60 Zeppelin unlisted, Emeigh printed border in red, gold, and black, with plate number single tied by Washington DC hand cancel, typed addressed with all appropriate flight cancels, first one we have seen, rare! (Image)

Est. $1,700-2,000

C16 5c Winged Globe tied by Washington DC machine cancel, neatly opened at top with seldom seen stuffer, serviced by Nickles and typed addressed, catalog value $175.00. (Image)

Est. $90-120

C17 8c Winged Globe on attractive Air Mail cover with rubber stamp cachet and unofficial U.S. Frigate Constitution cancel. (Image)

Est. $75-100

C17 8c Winged Globe Planty #9A, Unknown cachet in yellow and purple, scarce, last offered in 2000 and sold for $70.00. (Image)

Est. $100-125

C17 8c Winged Globe Planty #12, U.S. Post Office rubber stamp cachet on Bradie Buchanan Air Mail cover in red and blue, open top and scarce. (Image)

Est. $60-75

C17 8c Winged Globe Planty #13, Lockheed cachet in black (New Braniff Lockheed Vegas), unaddressed, rare, last offered in 1997. (Image)

Est. $90-120

C19 6c Winged Globe Planty #3, blue rubber stamp, unofficial Washington, DC. Airmail Field purple cancel. (Image)

Est. $75-90

C19 6c Winged Globe Planty #14, 1st Washington Air Mail Society rubber stamp cachet in purple on Air Mail cover, scarce. (Image)

Est. $90-120

C20 25c China Clipper Planty #14, Eagle Cover Service cachet in red, brown and blue, scarce. (Image)

Est. $75-100

C20 25c China Clipper Planty #36A, Unknown cachet in blue, last offered in 1997 and sold for $44.00, rare. (Image)

Est. $75-90

C20 25c China Clipper Planty #38, Chambers printed cachet in blue, single tied by San Francisco CA hand cancel, typed addressed, rare. (Image)

Est. $150-200

C20 25c China Clipper Planty #42 Unknown Cachet in black, first we have seen, Honolulu backstamp. (Image)

Est. $75-90

C21 20c China Clipper Planty #19, Washington Stamp Exchange cachet in red and blue, combo with C20, a scarce combo, with pencil erased address. (Image)

Est. $60-75