This Brock Bowers Autographed Las Vegas Raiders Riddell Full Size Speed Authentic Helmet is an excellent piece of sports memorabilia for any Brock Bowers fan or Las Vegas Raiders collector in your life! This Brock Bowers autograph has been guaranteed authentic by Beckett Authentication Services (BAS) and includes an ID number, verifiable on the authenticator's website. All autographs are backed by SportsCollectibles.com's 100% Authentic Guarantee.