USA 1971, MOON LETTER, with Apollo 15 flown moon letter, franked with USA Michel # 1042 and 1046/47, red start-mark "LAUNCH JULY 26-1971”, bord-mark "USS OKINAWA, AUG 7 1971 AM, (LPH-3)” and on the back green mark "RECOVERY AUG. 7-1971”, front signed SCOTT, WORDEN and IRWIN, perfect condition. (Image)