Louisville Slugger Triple Crown bat sports the signatures of the four triple crown-winning players whose names and the years they won are engraved on the barrel: Ted Williams (1942 and 1947), Mickey Mantle (1956), Frank Robinson (1966) and Carl Yastrzemski (1967). All of the signatures appear on the barrel underneath each player's engraved name, and all are signed in blue sharpie. Each of these gorgeous signatures gets a grade of 9.