Clay Matthews Autographed USC Trojans Mini Helmet- JSA Authenticated This is a Hand Autographed Helmet of Clay Matthews of The University of Southern California Trojans. This is a Riddell Football Mini Helmet. This item has a James Spence Authentication, which Comes with a JSA #'ed Sticker and a Matching JSA COA. You can view this item on the SpenceLOA website. 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.