Check out this Signed Dan Dierdorf St. Louis Cardinals Mini Helmet Inscribed HOF 96. This mini helmet has been hand-signed by St. Louis Cardinals star, Dan Dierdorf. The helmet is officially licensed by National Football League and comes with a tamper-evident hologram and matching Certificate of Authenticity. The helmet ships quickly and securely and is backed by Sports Collectibles 100% Money Back Guarantee. Dan Dierdorf autographs are hard to come by. Shop with confidence as this Dan Dierdorf autograph is authenticated and in pristine condition. St. Louis Cardinals fans will love this authenticated National Football League mini helmet.