OSU Buckeyes fans check out this Joey Bosa Autographed Ohio State Buckeyes Speed Mini Helmet - Certified Authentic! Joey Bosa was the star defensive end for the Buckeyes and a key member of the 2014 National Championship team. Fans and collectors can add this OSU Buckeyes Riddell Speed mini helmet with Joey Bosa's signature in black Sharpie to your autographed sports memorabilia collection. This item is a certified authentic and comes with a Certificate of Authenticity. It is also backed by our 100% Money Back Guarantee. Get your Joey Bosa signed Ohio State Buckeyes mini helmet here today!