This autographed Riddell Flash Alternate Speed mini helmet has been personally hand-signed by Justin Jefferson of the Minnesota Vikings.Note: See photo for minor signature imperfections.This autograph is certified by Beckett Authentication Services (BAS) Witness Certification. That means that a Beckett representative was present when this item was signed. It comes with the numbered authentication hologram with a QR Code Card that verifies the authentication on the Beckett website.Authentication: Beckett Hologram with QR Code Card