Featured is a Troy Polamalu signed Pittsburgh Steelers full size matte white speed replica helmet. This helmet was hand signed by Troy Polamalu in the presence of a Beckett authentication representative. Included with the helmet is a Beckett witnessed hologram and certificate of authentication. This helmet would make a great addition to any sports memorabilia collection.. SPECIFICATIONS Autographed By: Troy Polamalu Team: Pittsburgh Steelers Sport: Football Authentication: Beckett Grading Services