This is a Hall of Fame full size proline helmet that was personally autographed by 17 players, those players include: John Riggins, Dick "Night Train" Lane, Art Donavon, Charlie Joiner, Bill Willis, Mike Munchak, Gino Marchettie, Ron Yary, Jackie Slater, Mike Webster, Jim Ringo, Howie Long, Marve Levy, Ace Parker, Nick Buoniconti, Charley Taylor, and Willie Wood. This helmet includes a letter of authenticity from Beckett Authentication and a certificate of authenticity from Denver Autographs.