sold for $156,250. The Apollo 15 mission began when the Saturn V launch vehicle blasted off from KSC on July 26, 1971, and ended when the astronauts and the Command Module Endeavour were recovered by the helicopter carrier on August 7. Onboard Endeavour were Mission Commander David Scott, Command Module Pilot Alfred Worden and Lunar Module Pilot James Irwin. The Lunar Module Falcon, with Scott and Irwin aboard, landed on the Moon on July 30, and remained there for just under 67 hours. The mission set several space records and was the first to use the lunar rover. Scott and Irwin rode it to explore the area around the landing site during three periods of extravehicular activity (EVA). On August 2, before finishing the final EVA and entering the Lunar Module, Scott used a special postmarking device to cancel a first day cover provided by the United States Postal Service bearing two new stamps, whose designs depicted lunar astronauts and a rover, commemorating the tenth anniversary of Americans entering space. That cover was returned to the Postal Service after the mission, and is now in the Smithsonian Institution's National Postal Museum. Preparation Eiermann knew a stamp dealer named Hermann Sieger from Lorch, West Germany. The two had met by chance while on a bus to observe the launch of Apollo 12 in late 1969; Eiermann heard by Sieger's Swabian inflection that they were from the same part of Germany, and invited him to his house. Sieger got the idea for the lunar covers after hearing that the Apollo 12 astronauts had taken a Bible with them. When Sieger learned that Eiermann knew many astronauts, he proposed that an Apollo crew be persuaded to take covers to the Moon. Eiermann did not think astronauts would take money to do so, but agreed to ask them when Sieger characterized the payments as investments for the astronauts' children. Eiermann did not mention Sieger's name in his approach to the astronauts. Eiermann lived in Cocoa Beach, Florida at the time of Apollo 15, and was a local representative of Los Angeles-based Dyna-Therm Corporation, which was a NASA contractor. According to Scott's autobiography, one night several months before launch, the astronauts' supervisor, Director of Flight Crew Operations Deke Slayton, had Scott and the other crew members come to dinner at Eiermann's house; Scott described Eiermann as a longtime friend of Slayton. Worden, in his autobiography,