This item was hand signed by former Miami Dolphins star running back Ricky Williams at our in-store Public signing. It is accompanied by a Certificate of Authenticity from Palm Beach Autographs, JSA and a proof photo from the signing. A tamper-evident hologram will be affixed to the item. Signed items are guaranteed to pass any third-party authentication with 100% Money Back Guarantee. Each signature is witnessed by a member of our staff or comes out of a private signing.