Yeager, Chuck. First Day Cover commemorating the 50th anniversary of the first supersonic flight, made by Chuck Yeager on Oct. 14, 1947, signed in pencil above the cachet showing him standing by the "Glamorous Glennis," the plane he flew to break the sound barrier. Also signed by two members of the Bell X-1 team: Lt. Bob Hoover (X-1 backup pilot and chase pilot), and Maj Bob Cardenas (the officer-in-charge and B-29 drop pilot). Cover was cancelled at Edwards AFD, CA, Oct. 14, 1997 and bears a 32¢ stamp honoring the "First Supersonic Flight 1947.
Estimated Value $150 - 200.
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