During the trophy presentation after the title-clinching game 4 NBA Finals win, Curry threw his game-worn mouthguard at a fan who yelled for it.
That mouthguard is now up for sale.
The auction company said it could be worth at least $25,000.
It's not the first time Curry's mouthguard has been auctioned. A previous Curry mouthpiece sold for nearly $32,000 in 2016.