Mr Quittenton-Shaw told the BBC he could not attend the auction on Tuesday in person and decided to watch it online.
“They started off at £5,000 and it was £5,200, £5,400 and I thought well, pretty much this is going to be the bottom estimate and then two bidders really got going,” he said.
“When they’d finished, I was like, ‘wow, this is crazy’.”
Asked what he will be spending the money on, Mr Quittenton-Shaw said: “It’s going to be for a rainy day I think. I’m not too sure yet… it’s not quite sunk in.
“We all read about these kind of stories in the press, but you never believe it happens to you.
“The only thing I can say is if you’re looking at auction, just keep on looking – 9.9 times out of 10 it is often a failure, but that one time you can strike lucky.”
