Any idea what this signed helmet might be worth?

I have this replica helmet signed by a bunch of Hall of Famers. Here is a list of the signatures I could figure out: Larry Little 93, Lou Creekmur 96, Mike Ditka 88, Gino Marchetti 72, Marv Levy 01, Yale Lary 79, Leroy Kelly 94, Paul Krause 98, Tom Mack 99, Lenny Moore 75, Ron Kramer, Dante Lavelli 75, Don Maynard 87, Mike Haynes 97, Lem Barney 92, Bob St. Clair 90, Ted Hendricks 90, Deacon Jones 80, Bob Lilly 80, Joe, Delamielleure 03, Elvin Bethea 03, Dave Casper 02, Bill Dudley 66, Charley Trippi 68, Jan Stenerud 91, Mel Renfro 96, and Billy Shaw 99. There were also eight signatures I could not figure out. Any ideas what this may be worth and what is the best way to store or display something like this? thanks