Immensely desirable mid-sized flown American flag carried into lunar orbit on Apollo 15, 11.5 x 7.75, signed in the lower right corner in blue ballpoint by mission CDR Dave Scott with his first initial, "D," adding, "A-15, CSM Aug. '71." In fine condition, with a central vertical fold. Accompanied by a signed letter of provenance from Scott, in part: "I hereby certify that the medium United States flag…is from my personal collection and was flown aboard the Command and Service Module (CSM) Endeavor in lunar orbit for six days during Apollo 15, July 26–August 7, 1971…After orbiting the Moon for a day in preparation for the landing, Jim Irwin and I landed the lunar module ‘Falcon’ on the Moon between Hadley Rille and the Apennine Mountains…During the three days we were on the Moon, Al Worden flew the ‘Endeavor’ solo in lunar orbit…The ‘Falcon’ remained on the lunar surface for 66 hours and 54 minutes, after which we launched and completed a direct rendezvous…docking with the Command and Service Module (CSM) ‘Endeavor’ in lunar orbit, after which we spent two more days in lunar orbit conducting scientific experiments and photography…This Apollo 15 medium United States Flag has been in my personal collection since returning to Earth.” A superb example of one of the most highly sought flown formats.