A boot worn by Neil Armstrong has sold for $49,000 (£38,000) as part of an auction of space memorabilia. The prototype Apollo A7L lunar boot never went to the moon with the astronaut but it is believed it was used in a different flight or served as a backup. It is embroidered with ‘Armstrong’ on the inside of the tongue and has a silver, gold and blue exterior. Parts of the shoe are believed to have been re-purposed by the designers and used on other NASA items. A host of other items also sold at the auction including a Soviet space suit, a signed picture of Neil Armstrong and a series of Apollo 11 engineer’s manuals. The total cost of the auction was $110,000 (£87,000).