Story highlights Treasure trove of more than 600 NASA images from the space race are up for sale at auction in London.

Photographs include the first "selfie" in space, and an extremely rare picture of Neil Armstrong on the Moon.

London (CNN) An out-of-this-world collection of vintage NASA photos -- including the first "selfie" taken in space and a rare image of pioneering astronaut Neil Armstrong on the Moon -- are to go up for sale in London.

The treasure trove of more than 600 images, including some of the most significant moments in lunar exploration, was put together over decades by a dedicated collector.

The pictures will go under the hammer at Bloomsbury Auctions in London on February 26, where they are expected to sell for between £300 ($465) and £10,000 ($15,525) -- a total of upwards of £500,000.

Among the highlights of the sale is a photograph snapped by Buzz Aldrin -- later the second man to step onto the Moon -- during the Gemini 12 mission in November 1966, which is believed to be the first space "selfie." It is tipped to sell for £600 to £800 ($932 to $1,242).

Aldrin also features in perhaps the most famous image in the sale: the so-called "visor photograph" showing him on the Moon on July 20,1969 during the Apollo 11 mission.

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