Jace Sternberger Autographed Green Bay Packers Chrome Mini Helmet - JSA W Auth This is a hand autograph of Jace Sternberger of the Green Bay Packers on a Riddell Football Limited Edition Chrome Mini Helmet. This item has a James Spence Witness Protection Authentication, which comes with a numbered sticker and a matching JSA Certificate of Authenticity. You can view this item on The SpenceLOA 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.