This Chicago Bears Riddell Full Size Replica Helmet was signed by Hall of Fame Linebacker Mike “Samurao Mike” Singletary. Singletary is a member of the Vaulted Chicago Bears Linebacker’s Corps, “Monsters of the Midway; which also includes Dick Butkus and Brian Urlacher. For authentic purposes this helmet will be accompanied by a James Spence Certificate of Authenticity along with a matching serial numbered hologram upon the helmet.