Flown sterling silver Apollo 13 Robbins medal, with a raised design of the mission insignia on the face, approximately 1.25″ in diameter, engraved on the reverse with the launch date of April 11, 1970, and the return date of April 17, 1970, encircled by the names of the astronauts in raised text, with serial number, "146," engraved below. Condition is mint state. Accompanied by a signed letter of authenticity from Virginia Swigert, the sister of command module pilot, Jack Swigert, in part: "I certify that this Apollo 13 Flown Robbins Medal—serial number 146 is from Jack Swigert's personal collection." The Apollo 13 Robbins medal holds the distinction of being somewhat different than all of their other mission counterparts. Following a last minute change of crew—Ken Mattingly was swapped out for Jack Swigert three days before launch after a possible exposure to rubella—all of the flown medals were melted down and restruck with the names of the final crew.
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