Extremely rare 1951 Willie Mays First Major League home run and hit full ticket proof dates from the May 28, 1951, contest between Boston and the New York Giants at the Polo Grounds. Mays supplied his team's only run with that homer in a 4-1 loss; ticket presents beautifully but some rounding and small bends at corners in this encapsulated specimen graded PSA GD 2 (Pop 1 - None Higher). Little could anyone have realized that the Say Hey Kid was just getting started, blasting another 659 round trippers during his Hall of Fame career.