This Autographed Super Bowl XX Logo Official Wilson "The Duke" Nfl Football has been Personally Signed by Jim McMahon of the Chicago Bears. This item is 100% Authentic to include a hologram by James Spence Authentication Services. This item will come with an affixed James Spence Authentication Services (JSA) authentication sticker, which includes a scannable QR code to verify authenticity. Please note that JSA no longer provides serial-numbered COA cards with witnessed items, and the attached JSA sticker will serve as the complete authentication for this item. This is a JSA Witnessed Protection Program item which means a JSA representative was present when this item was being signed. The authenticity can be verified on JSA website.