This helmet has been personally hand-signed by Jerry Kramer with the inscriptions "HOF 18; 2X SB CHAMPS; 5X NFL CHAMPS; 5X 1ST TEAM ALL-PRO; 1960S ALL-DECADE TEAM." 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. This is a limited edition of 24.