The WHEELCHAIR used by the physicist Stephen Hawking has sold at auction for more than $ 540,600, while a copy of his doctoral thesis has raised more than $ 1.05 million, the British auction house Christie's revealed this week.
The motorized red-colored chair was used by the physicist after he was paralyzed with motor neuron disease and was initially expected to raise $ 26,900.
Revenues from the sale of wheelchairs were distributed between two charitable institutions, the Stephen Hawking Foundation and the Association of Neuro-motor Diseases.
Prof. Hawking's 1965 University Thesis, "Properties of Expanding Universes," sold for more than $ 1.05 million, more than three times more than its pre-sale estimate at the online auction.
Diagnosed with motor neuron disease at the age of 22 and given a few years to live, Prof Hawking died in March at age 76.
He has expanded scientific thinking about black holes and the origins of the universe and has reached the status of global celebrity, writing bestselling books and guests starring The Simpsons.
A screenplay of one of his appearances on the animated television show was sold for $ 11,235 in the sale of 22 articles by Prof. Hawking, while a compilation of his medals and awards raised more than $ 530,000.
Her daughter, Lucy, said the sale gave "admirers of her work the opportunity to acquire a record of the extraordinary life of our father in the form of a small selection of evocative and fascinating elements."
The children of Hawking expect to retain their scientific archive for the nation.
Christie's Auction House is conducting negotiations to deliver the file to British authorities instead of inheritance tax.
The nine-day online auction, "On The Shoulders of Giants", also sold items that belonged to other great scientists, including Isaac Newton, Charles Darwin and Albert Einstein.