Featured is a Troy Polamalu signed Pittsburgh Steelers full size speed replica lunar eclipse helmet. This helmet was hand signed by Troy Polamalu in the presence of a JSA authentication representative. Included with the helmet is a JSA witnessed hologram and certificate of authentication as well as a deluxe acrylic display case. This helmet would make a great addition to any sports memorabilia collection.. SPECIFICATIONS Autographed By: Troy Polamalu Team: Pittsburgh Steelers Sport: Football-NFL Authentication: Beckett Grading Services