Harmon Killebrew Signed Autographed 573 HR Inscription Twins OMLB Baseball JSAHarmon Killebrew Signed Autographed Official Brown Era Rawlings Baseball JSA Killebrew was an American professional baseball player who played most of his 22 year career in Major League Baseball with the Minnesota Twins Signed with inscription "573 HRs" AL MVP in 1969 6 time AL home run leader (1959, 19621964, 1967, 1969) Inducted into the Baseball Hall Of Fame in 1984 JSA #CE11042 Excellent condition; little to no signs of visible handling use.