This Riddell replica helmet has been personally hand-signed by Y.A. Tittle with the inscription ''4x NFL MVP, HOF 71.'' It is officially licensed by the National Football League and comes with an individually numbered, tamper-evident hologram from Fanatics Authentic. 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.