Tyvis Powell signed Autographed Mini Helmets is the missing piece to any Ohio State Buckeyes sports room, man cave, home or office. OSU fans will love this Tyvis Powell Ohio State Buckeyes Autographed Black Riddell Speed Mini Helmet - 2014 National Champs Inscription, the perfect way to commemorate Ohio State's 2014 National Championship title. This Tyvis Powell signature has been authenticated by the seller, Sports Collectibles, and comes complete with a Certificate of Authenticity (COA) and matching tamper-evident sticker. Sports Collectibles is the online leader in authentic Ohio State Buckeyes autographed sports memorabilia. Buckeyes fans love the black helmets worn in a 2014 victory over rival Michigan, and adding a star's signature from the Championship team is sure to please. Shop with complete confidence as this Tyvis Powell autograph is 100% authentic. Your order ships out same day of purchase.