Bidspirit auction | America's Supersonic Flight Collection

America's Supersonic Flight Collection - A collection of event covers from America's Supersonic Aircraft Program including a 25th Anniversary cover from the first supersonic flight hand signed by Chuck Yeagar. It is accompanied by a commemorative Chuck Yeagar coin. There is also a hypersonic X 43 Mach7+ record breaking flight cover signed by the flight crew of Gordon Fullerton, Dana Purifoy and David McAllister. Also, an X-45 cover signed by the program managers Col. Mike Leahy USAF, Gary Cosentino NASA Dryden Research Center and Richard Allridge Head of Boeing Phantom Works. All are in very good condition. Condition: #1001