Extremely desirable flown embroidered 'Grumman' Apollo 10 mission insignia patch carried to the moon on Apollo 10, measuring 4˝ x 4˝, signed and flight-certified on the reverse in blue felt tip, "Flown—X, Tom Stafford." In fine condition. Accompanied by a provenance letter on the letterhead of Stafford's consulting firm, in part: "Attached to this letter is an Apollo X crew emblem flown on the flight of Apollo X during May 18 to 26, 1969. I was commander of this flight which carried the first lunar module named Snoopy to lunar orbit. This emblem was carried in Snoopy as Gene Cernan and I descended to within 50,000 feet of the lunar surface…This emblem has the distinction of being one of the fastest flown artifacts from space travel. During the Apollo X reentry, I along with my fellow crew members, Gene Cernan and John Young, established the all-time record for the highest speed ever attained by man, 24,790 miles per hour. This speed record will not be broken until a crew of astronauts return from Mars sometime during the 21st century."