This mini helmet has been personally hand-signed by Sebastian Aho. It is officially licensed by the National Hockey 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. . If a product is unsigned or non game-used, a hologram will not be included. Sebastian Aho memorabilia. Carolina Hurricanes memorabilia.