Bill Bates Autographed Dallas Cowboys Speed Mini Helmet-Prova *Black This is a Hand Autograph of Bill Bates of the Dallas Cowboys on a Riddell Football Speed Mini Helmet. This item has a Prova Authentication, which comes with a Prova #'ed Sticker and a COA. You can view this item on the Prova website, it shows when and where the item was signed. It was signed either at a public autograph appearance or a private signing. This is a stock photo of the item. Although you may not receive this exact item, the item you receive is virtually identical and brand new in great shape.