The APS Sale

Airmail, 1918, 24¢ carmine rose & blue, used with 1¢ green (498) and 2¢ carmine (499) tied by purple "Air Mail Service Wash. N.Y. Phila. 'Washington' May 15 10AM First Trip" duplex on first flight cover from Washington D.C. to New York City., F.-V.F. AAMC $500.

Scott No. C3   ◦ ◦ ◦ ◦ ◦  Estimate $200 - 300.

The airmail rate effective May 15, 1918 to July 14, 1918 was 24¢ per ounce. This was overpaid by 3¢, as airmail rates were frequently misunderstood since the 24¢ rate included special delivery service and ground leg if any.