This weekend Mr Leonov's training suit (pictured left) for the first space walk on 18 March 1965 was sold at auction for dollars 255,500 ( pounds 171,000). It was one of 200 artefacts recording three decades of Soviet space travel to be sold at Sotheby's in New York. The collection fetched dollars 6.82m ( pounds 4.6m).
Included in the sale were journals and diaries chronicling the ups and downs of the Soviet space programme, and two space capsules - one of them reusable. Both capsules were bought by an anonymous American bidder for dollars 1.6m ( pounds 1.1m) and dollars 552,500 ( pounds 371,000).
Among the oddities was a guitar that has been circling the Earth since 1987 aboard the Russian space station Mir. It made dollars 13,000 ( pounds 8,700).
Emmet Stephenson, a self-described 'space nut', was among the happiest people at the auction. He paid between dollars 400,000 and dollars 500,000 ( pounds 268,000- pounds 336,000) for four spacesuits and 15 other artefacts, including the pressure suit that the first man in space, Yuri Gagarin, used to train for his 1961 mission.
Photograph: Edward Webb