Ted Williams and Mickey Mantle are two Hall of Famers who played their entire careers for bitter rivals, the Boston Red Sox and the New York Yankees, but these signed bats are now on the same side. 1) Williams bashed 536 home runs in a career shortened by almost five years because of his military service as a Marine pilot in two wars. Wonderful keepsake - a signed bat by the last man to hit .400. Ted Williams signed Hillerich and Bradsby Louisville Slugger W166 bat. 2) Mickey Mantle's 521 homers almost match Williams, and Mantle won seven World Series, and was the American League MVP three times. Mantle signed Louisville Slugger K55 bat, inscribed "No. 7." Authenticated by PSA and comes with an LOA.