50th Anniversary Airmail - First Day Issue

This First Day Cover commemorates the 50th Anniversary of U.S. Airmail, dated May 15, 1968. It features a 10-cent airmail stamp depicting a classic airmail plane, postmarked in Washington, D.C.

• Route: San Francisco to New York and Washington, D.C.
• Includes a special cachet highlighting the airmail pioneers and the trans-continental route.
• Signed by the pilot, adding historical significance.

The cover was flown on a Trans-Continental Golden Anniversary Post Office Department Commemorative Flight in a rebuilt De Havilland-4B, P.O.D. Mail-plane #249.