Commemorative cover with a cachet honoring the shuttle Enterprise’s first taxi run, with a Challenger STS-51L cachet stamped over the cover’s printed cachet, signed in black ink by Onizuka. Cover bears a January 28, 1986, cancellation date—the day of the tragic Challenger launch. In fine condition. Accompanied by a full letter of authenticity from Steve Zarelli. RR Auction COA.
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