Riddell Packers 2023 SALUTE TO SERVICE II Speed mini helmet hand signed by Green Bay Packers Super Bowl XLV Champ CLAY MATTHEWS. The signature is in White paint pen. This item was signed at a private signing with us and would make a great addition to any Packers collection! This item was signed at a private signing with us This item is guaranteed to be 100% authentic and will include a COA from JSA authentication.