Rusty Schweickart's flown sterling silver Apollo 10 Robbins medallion, measuring approximately 1.25˝ x 1.25˝, featuring a raised design of the shield-shaped mission insignia on the face—a Roman numeral "X" towering over the lunar surface, with the CM and LM on orbit, with the crew's surnames in the border: "Stafford, Young, Cernan." The reverse is engraved with the mission dates, "May 18–26, 1969," and serial number, "70." Stamped below with the Robbins "Sterling" hallmark. Encapsulated and graded by NGC as "MS 65," with the label noting the provenance, "Ex. Rusty Schweickart." Accompanied by the original case and a letter of provenance from Schweickart, in part: "I hereby certify that this Apollo 10 silver Robbins medallion, serial #70, was flown aboard the Apollo 10 mission in 1969. As a member of the astronaut office, I was permitted to purchase up to two Robbins medallions from each mission."
One of 300 Robbins medallions flown to the moon on Apollo 10, this has the unique distinction of being part of a Guinness World Record—on its return from the moon, Apollo 10 set the record for the highest speed attained by a manned vehicle: 24,791 mph (39,897 km/h) or Mach 36!
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