Troy polumalu autographed/inscribed "hof 20" pittsburgh steelers speed white matte authentic helmet w/visor & 3d stickers becket witnessedthis pittsburgh steelers white matte authentic riddell speed helmet has been personally hand-signed by troy polumalu. it comes with an individually numbered, tamper-evident hologram from beckett authentic. to ensure authenticity, the hologram can be reviewed online. this process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.