A rare, 184-year-old copy of the Declaration of Independence found by a bargain hunter at a Nashville thrift shop is being valued by experts at about 100,000 times the $2.48 purchase price.

Michael Sparks, a music equipment technician, is selling the document in an auction March 22nd at Raynors' Historical Collectible Auctions in Burlington, North Carolina. The opening bid is $125,000 and appraisers have estimated it could sell for nearly twice that.