Former Ravens running back Damien Berry denied putting his Super Bowl XLVII ring up for sale, telling The Baltimore Sun that the pending auction wasn't authorized by him.

Berry said a friend put the ring up for sale without his knowledge, selling the ring to an undisclosed third party that later sold it to Goldin Auctions.

"I would never knowingly sell my Super Bowl ring," Berry said. "I'm not that kind of guy. That's not me. The ring means a lot to me and I want to do whatever it takes to get it back. This isn't what I'm about."

However, Ken Goldin, the founder of Goldin Auctions, told The Baltimore Sun on Saturday night that he has a copy of a sales agreement with Berry that includes witnessed, notarized documents for a chain of custody that will be made available to the winning bidder of an online auction conducted through www.GoldinAuctions.com.

Goldin said that his company conducts extensive research and verification of all items, and wouldn't sell anything that it's not authorized to make available for auctions.

A source familiar with Goldin Auctions' business practices said the company conducts extensive background checks to ensure that there's paperwork backing up the legality of all sales.

The minimum bid for Berry's ring -- pictured here on the Goldin Auctions website -- is $15,000. As of Saturday night, the highest of five bids was $36,603.