The wheelchair used by physicist Stephen Hawking sold nearly £ 300,000 at auction at $ 393,000, while copies of his Ph.D. work brought nearly £ 585,000 ($ 767,000), Christie's auctioneer said on Thursday.
The engine chair used by Hawking after being paralyzed by a motor neuron raised £ 296,750 ($ 385,122) in Christie's online auction. It was expected to make up to £ 15,000 ($ 19,467).
Revenue from the sale of the chair will go to two charities, the Stephen Hawking Foundation and the Motor Neuron Association.
Hawking's 1965 Cambridge University Diploma, "Expanding Universe Properties," sold for an online auction at £ 584,750 ($ 758,888), more than three times the estimate of pre-sales.
He was diagnosed with motor neuron sickness at the age of 22 and only got a few years to live. Hawking instead died in March for 76 years. He expanded his scientific thinking about black holes and the origin of the universe and achieved celebrity status, writing the best-selling books and guest stars on The Simpsons.
The script of one of his appearances on the animated TV show sold 22 pieces of Hawking's items for £ 6,250 ($ 8,111), while a collection of medals and prizes earned £ 296,750 ($ 385,122).
Hawking's daughter Lucy said the sale gave "admirers of their work the chance to get the illumination of the father's extraordinary life in the form of a small selection of evocative and fascinating things."
Hawking's children are hoping to save their scientific archive for the nation. Christie's negotiations are negotiated and handed over to the British authorities instead of inheritance tax.
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