The stolen chair was the "earliest preserved case" for the chairs that Havking used to Kristi after he became paralyzed for a diagnosed motor neuron disease.
Hoking used this chair since the late eighties of the last century until the mid-1990s, until he could handle this chair anymore.
The trolley was sold as a collector's item, not for medical use. The proceeds from sales will be donated to two charity foundations – the Stevens Havking Foundation and the Motoro neuronics Society.
Hawking's 1965 Doctoral dissertation at the University of Cambridge was sold for $ 767,000 (€ 675,500) at the same auction at the same time. Other items, including blouse, were auctioned for a total of $ 650,000 (572,450 euros).
The auction, which included Aizek Newton, Charles Darwin and Albert Einstein, sold 52 items. Their total price exceeded $ 2.3 million (two million euros).
Houghton, aged 21 years, was diagnosed with motor neuronal disease in amyotrophic lateral sclerosis, which allowed him to move only with wheelchairs, and later lost the ability to speak. Despite a serious illness, Hoking was actively involved in scientific and social life. He died on March 14 this year at the age of 76 at his home in Cambridge.