This mini helmet has been personally hand-signed by Baker Mayfield with the inscription ''HT 17.'' It is officially licensed by the NCAA 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. Includes certificate of authenticity and hologram from Fanatics! This signature is guaranteed authentic through the Fanatics hologram system. Officially Licensed.