This is a rare opportunity to own a piece of baseball history. This 1990 Leaf Sammy Sosa Rookie Card (#220) features a bold, hand-signed autograph from the Cubs legend and home run king. Adding to its value, the card includes a "Slammin" inscription, paying homage to his nickname and legendary power at the plate. The autograph has been authenticated and professionally graded a perfect 10 by PSA/DNA.