The commemorative ring worn by Olympic gold medallists Rulon Gin Salt Lake City.
The commemorative ring, celebrating his gold medal in Sydney, was his highest selling item at today's auction.
Other items sold include Gardner's Olympic robe, which sold for $200 (£125/€150), and a framed "Got Milk?" ad of Gardner, which went for $140 (£90/€110).
Around 300 people attended the Erkelens & Olson Sales and Auction with the highest selling item a 1987 Porsche, which was auctioned for a dazzling $107,000 (£66,391/€83,977), a new record for the auction house.
Sadly for Gardner, this was not part of his sale items.
It was the second bankruptcy auction that has seen items from Gardner's wrestling career appear - the first taking place in October 2012, two months after the former world champion filed for bankruptcy.
This initial auction included a Harley Davidson with a Sydney Olympic logo and signed by the grandson of Harley Davidson, and Gardner's gold and bronze medals from the Olympic Games in 2000 and Athens 2004 respectively.
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October 2014: Olympic wresting gold medallist puts memorabilia up for sale in bankruptcy auction
January 2011: Olympic wrestling champion Gardner in tears as he sheds 32lbs to lead the field in The Biggest Loser: Couples