The Donruss 2021 Joe Montana All-Time Gridiron Kings Auto AT-3 PSA 8/10 trading card is a highly sought-after collectible for fans of the San Francisco 49ers and football enthusiasts alike. This card features a hard-signed autograph from Joe Montana, certified by Professional Sports Authenticator (PSA) with the authentication number 63898380. With a grade of 8 out of 10, this card is made of 35 Pt. card stock and is part of the All-Time Gridiron Kings insert set, making it a valuable addition to any sports trading card collection.