Though it's not clear exactly who the graduation honoree was, this 5.5" x 4.25" card with its colorful illustration showcases a beautiful signature (10/10) from early in the Hall of Fame outfielder's career. There's a yellow ribbon attached to the upper left corner. The Pride of Puerto Rico, Clemente played his entire, 18-year career with the Pittsburgh Pirates before he perished in a plane crash on the last day of 1972.