This autographed full size Riddell authentic Speed helmet has been personally hand-signed by Mike Singletary of the Chicago Bears. When signing, Singletary inscribed “HOF 98” along with his signature. 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 that verifies the authentication on the Beckett website.