Mike Sainristil Autographed Michigan Wolverines Speed Mini Helmet Beckett Witnessed This Michigan Wolverines mini Riddell Speed helmet has been personally hand-signed by Mike Sainristil. It comes with an individually numbered; tamper-evident hologram from Beckett 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. Authenticator Pre-Certified Authenticator: Beckett Authenticated Describe how you came to possess this item: