Clay Matthews USC Trojans autographed signed mini helmets are the perfect addition to your USC sports room, man cave, home, or office. This Clay Matthews Sr. Autographed USC Trojans Schutt Mini Helmet - PSA/DNA Authentic was signed during the Midwest Sports Spectacular in Columbus, Ohio from January 19-21 and is a certified authentic autographed product. PSA/DNA was on hand to witness and authenticate Clay Matthews Sr. signing the mini helmet, and your order comes complete with a Certificate of Authenticity (COA) from PSA/DNA. This item is backed by our 100% Money Back Guarantee and ships the same day of purchase. Sports Collectibles is your online leader in autographed signed USC Trojans memorabilia. Bulk your growing USC Trojans autographed memorabilia collection by adding this Clay Matthews Sr. signed USC Trojans mini helmet here today!