This jersey has been personally hand-signed by Hall of Fame linebacker Bob Griese with the inscriptions "HOF 17, SB VII CHAMPS, SB VIII CHAMPS, 17-0." 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.