Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1
Lot 16:
1918 (September 5-7), First Experimental Flight NYC – Chicago by Army pilots M. Miller and E. Gardner, cover franked by 16c green, tied by oval violet ”N.Y. – Chic. Aero Mail 9.5.1918. First Trip” marking, Blue Wings ”Aero Mail”, Chicago arrival ds on reverse, minor conveyance flaws, still F/VF, Est. $250-$300, Sc. # C2
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