| Lot Number: 474 | |
 | Date: 1918, Sep 8 Est. price: £30.00 Category: United States Internal Description: US Governmental Experimental Air Mail flight, New York to Chicago, AAMC #108, US aero clubs official commemorative cover, 21x10cm, franked 16c (C2) canc 'N.Y.CHIC/Aeromail/9.5.1918/First Trip'. Stamp has lower edge defect, and cover has upper rh corner tear, see scan. Nevertheless a significant item. |
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| Lot Number: 475 | |
 | Date: 1920, Nov 29 Est. price: £25.00 Category: United States Internal Description: US Governmental Flight #110c Crash Cover, experimental flight Cleveland-New York, returned 'address not known ' bs New York Jan 6, 1919, Schneider corner cover franked 16c Curtiss Jenny C2, canc Cleveland/Dec 18/9am/Ohio' cds, also 1918 dumb cancel, violet three line 'Fee Claimed at Office/First Adress' and 'No such Street' hs's. |
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| Lot Number: 476 | |
 | Date: 1922, Sep 23 Est. price: £20.00 Category: United States Internal Description: US Governmental Experimental flight, Springfield, Ill. to Chicago, AAMC #155, 2c PSC canc Springfield cds, and fine strike 'Aeroplane Station/State Fair Grounds/Springfield, Ill.' cachet, also winged US airmail hs. |
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| Lot Number: 477 | |
 | Date: 1925, Jul 1 Est. price: £20.00 Category: United States Internal Description: New York to Chicago, bs 2/7, overnight test flight, AAMC #174, franked 10c at New York, purple three line cachet 'Air Mail/First Overnight Flight/New York to Chicago' |
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| Lot Number: 478 | |
 | Date: 1926, Dec 2 Est. price: £30.00 Category: United States Internal Description: Cobham First United States Overland Flight in DH Moth, green circular cachet, printed souvenir cover franked 2c, Milburn, New York Dec 2nd, and with additional 2c verso, bs Philadelphia 3/12, initialled by Sir Alan J Cobham pilot. |
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| Lot Number: 479 | |
 | Date: 1926, Dec 2 Est. price: £30.00 Category: United States Internal Description: Cobham First United States Overland Flight in DH Moth, green circular cachet, printed souvenir cover franked 2c, Milburn, New York Dec 2nd, and with additional 2c verso, bs Washington Dec 3rd, initialled by Sir Alan J Cobham pilot. |
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