First day cover honoring the centennial of baseball, postmarked at Cooperstown on June 12, 1939, signed in blue ballpoint, "Regards, Jimmie Foxx." In fine condition. This three-cent postage stamp honoring baseball's 100th anniversary was issued in conjunction with the dedication and opening of the National Baseball Hall of Fame in Cooperstown, New York, on June 12, 1939. A legendary early power hitter who became the second player in MLB history to hit 500 career home runs, Foxx was inducted into the Hall of Fame in 1951. Encapsulated in a PSA/DNA authentication holder.
