The 2021 Panini Immaculate Collection - Signatures Sandy Koufax #SS-SK /10 is a highly sought-after sports trading card featuring an autograph from legendary Major League Baseball player Sandy Koufax. This hard-signed card is part of a limited print run of only 10 copies, making it a rare and valuable collectible for fans and collectors alike. Graded a perfect 10 by Professional Sports Authenticator (PSA), this original card is a must-have for any baseball enthusiast looking to add a piece of history to their collection.