The product is a 2026 Panini Donruss Optic trading card featuring an autograph from Josh Knoth of the Milwaukee Brewers. This specific card is part of the Purple Signature Series with a limited print run of 49. The autograph is authenticated by Panini Authentic and appears in the form of a label or sticker. The card is serial numbered and includes the player's name, team, and card number, making it a valuable collectible for fans of Major League Baseball and sports trading cards.