Lot 1662
 
1918 (May 15) Philadelphia — Washington, D.C. first flight (AAMC 101D1), 4¢ 9¢ & 11¢ Franklins on pink "Aerial Mail Service" vignette and tied by Philadelphia "First Trip" duplex on cover to Washington, D.C., blue "Special Aero Mail" label at lower left, "Help Humble the Hun" patriotic label as previous on reverse, F-VF. AAMC $500.
|
| |
| Realized $1,200 |
