This product is a 4x6 1/2" photo signed by Bronko Nagurski, a legendary NFL football player. The signature has been authenticated by James Spence Authentication (JSA) for authenticity. This collectible item is a beautiful piece of sports memorabilia, showcasing a genuine autograph from a prominent figure in American football history. It is a valuable addition to any sports memorabilia collection, especially for fans of the NFL and collectors of authentic autographed items.