Flown limited edition commemorative cover, 9.25 x 4, with a cachet honoring the X-15 rocket pilots, 247/1500, flown over Edwards Air Force Base by Joe Engle, signed in pencil by Engle, Scott Crossfield, Bill Dana, and William ‘Pete’ Knight. In fine condition. Pre-certified Zarelli Space Authentication.
This item is Pre-Certified by STEVE ZARELLI
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