The Wilson Blade racquet which was mangled; after Williams got irritated with umpire Carlos Ramos choice to penalise her three times throughout the contest.
It was then given to Goldin Auctions by a buyer who had purchased it at a collectable store; where it had been sold by a US Open ballboy called Justin Arrington-Holmes.
He will be likely kicking himself right now as the bidding stands at $4,250 as of time of writing; the auction closes on December 7.
https://twitter.com/TRTWorldNow/status/1038649756317175812?s=20