June 13, 1937, St. Louis Cardinals vs. Boston Bees game used and signed baseball attributed to Joe Medwick's 11th home run of his Triple Crown Season. "BOSTON BEES FIELD, JUNE 13th '37" is written on the sweet spot of this Official National League (Frick) ball in black ink. Details of the game are written on the side panel, including "ST. LOUIS 6, BEES 2." Medwick signed the opposite side panel of the ball, and "HOME RUN BALL NO. 11, TWO MATES ON" is written on the ball, above his signature. The ball shows heavy signs of game use. Includes a full LOA from PSA.