Transcript for Stephen Hawking's wheelchair, PhD thesis, other items of late physicist at auction

Roasting a section Lexus ES states Stephen Hawking. In America a huge range material they were present his serious scientific side can cost. One of the five copies of his. Doctorate thesis. You got some of the papers that he published that give us. The most important ideas introduced on black holes in particular. And satin on the job just face time and they put some of the fun items specifically his. His presence is his thoughts not his scientific community to say when things I really love. He's the poster that invites time travelers depend upon Tina Jordan happened several years before. Ams. Some pockets of some script as well say it gives you both sides discussed Nazi and it's just a way for people who are fans of Stephen Hawking. People who admire and some of his extraordinary story to connect with him and buy something turn to remember him by. They hit the timing and weighs quite natural because Johnson's longest states it's it's the logical mainland France founders take decisions about what to do with with hits the physical legacy that you left behind. They off. Looking to replace his archive and his office. I was offering huge the nation. But I left Dave. Some items like this. Could be offered school commands could enable people to connect at a stage when he snooze in his in his physical presence is still very fresh in people's minds.

This transcript has been automatically generated and may not be 100% accurate.