Frankie Dettori is selling some of his trophies and riding gear collected over his 35-year career.
The superstar jockey is downsizing so is having a clear out of his family home in Newmarket as he prepares for the house move.
And with his retirement looming at the end of the year he is getting rid of some unwanted items at auction with some of the money raised going to charity.
Among the 126 lots going under the hammer from Wednesday July 5 is the trophy he received for his latest Classic success after winning the Betfred Oaks at Epsom in June.
Also listed are jockey scales gifted to him by Steve Cauthen, a saddle, boots and photographs, many of them signed by Derttori, in the online auction which will be conducted by Cheffins in Cambridge..
The sale has been described by auctioneers as a "once-in-a-lifetime opportunity to own prizes and memorabilia from one of the greatest sports personalities worldwide".
Dettori said: "We're going to move away from Newmarket. Newmarket's been my life.
"We're scaling down and I've got so much stuff, we thought we might as well just auction it.
"I didn't realise because they end up in drawers, in cupboards, in the cellar, I mean they're all over the place.
"Now we're clearing up a lot of stuff, we didn't realise how much accumulated in so many years."
He said it had been difficult to decide what to sell and what to keep.
"Yes, of course, you know, but then you've got to put everything in context," he said.
"You need a mansion to put the trophies up.
"I tried to keep something what means something to me, some of the important stuff like the Derby and things like that, but the rest is going to go up in auction."
He continued: "All my kids have branched out so it's only myself and Catherine my wife left so we're planning to rent the house, scale down and move towards London a bit. And I'd like to travel the world a bit."
He said some of the proceeds of the auction will go to the charity Direct Aid For Africa (DAFA), and some will go to his children, adding: "My daughter's getting married next year but she hasn't fixed a date yet."