It was expected to fetch £150,000 but interest from across the world saw it reach nearly four times that amount.
Auction house Christie's ran the auction called "On the Shoulders of Giants" to raise money for the Stephen Hawking Foundation and the Motor Neurone Disease Association. Rehana Popal, an immigration specialist in London, said that in two years she had lost six instructions on similar grounds. Hawking's items all combined sold for about $1,306,275 at the auction. It collected more than £1.8 million in total.More news: SSE and NPower merger to be delayed into 2019
Hawking passed away at the age of 76 back on March 14, 2018 after suffering from a motor neurone disease, Amyotrophic Lateral Sclerosis (ALS) for over 55 years.
Those items included a black bomber jacket, the script from an episode of The Simpsons on which he appeared and a 1988 copy of his best-selling book, A Brief History of Time, marked with his thumbprint as a signature.More news: Bethesda VP Pete Hines: Fallout 76 will last "forever"
A signed copy of his 117-page dissertation - one of only five - titled Properties of Expanding Universes from 1965 secured the top price of £584,750. The full collection also included manuscripts by Isaac Newton, Charles Darwin, and Albert Einstein.
According to the Guardian, the esteemed physicist's daughter Lucy Hawking said the auction was an opportunity for his admirers to "acquire a memento of our father's extraordinary life in the shape of a small selection of evocative and fascinating items".
Hawking's children hope to preserve his scientific archive for the nation.More news: Tottenham's Harry Kane would be revered if he was Italian - Mauricio Pochettino