These are the Hand Autographs of Troy Aikman, Emmitt Smith, and Michael Irvin of the Dallas Cowboys on a Riddell Football Replica Full Size Helmet. This item has a JSA and Prova Witness Authentication, which each comes with a numbered sticker and a matching Certificate of Authenticity. You can view this item on the Spence LOA and Prova websites, it shows when and where the item was signed. It was signed either at a public autograph appearance or a private signing. This is the exact item that you will be receiving. Please see pictures for further details. These are the Hand Autographs of Troy Aikman, Emmitt Smith, and Michael Irvin of the Dallas Cowboys on a Riddell Football Replica Full Size Helmet. This item has a JSA and Prova Witness Authentication, which each comes with a numbered sticker and a matching Certificate of Authenticity. You can view this item on the Spence LOA and Prova websites, it shows when and where the item was signed. It was signed either at a public autograph appearance or a private signing. This is the exact item that you will be receiving. Please see pictures for further details.