Mario Williams Autographed Buffalo Bills RETRO Speed Mini Helmet GTSM Witnessed This Bills mini helmet has been personally hand-signed by Mario Williams. It is officially licensed by the National Football League and comes with an individually numbered; tamper-evident hologram from GTSM. To ensure authenticity; the hologram can be reviewed online. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud. Comes with a tamper-evident hologram from GTSM Officially licensed by the NFL Authenticator Pre-Certified Authenticator: GTSM Authenticated History of item: Mario Williams has signed this item in the presence of a representative from GTSM. Describe how you came to possess this item: