Harmon Clayton Killebrew Signed Baseball with 573 HR HOF MVP Inscriptions. JSARare Full Name Harmon Clayton Killebrew Signed Baseball Inscribed, "573 HR, HOF 1984, AL MVP 1969" A unique Harmen Killebrew Signed Baseball with the coveted 1984 Hall of Fame, 573 HR's, #3, and 1969 AL MVP inscriptions. The Official American League Baseball is bright white and the sweet spot features a clean and bold signature by Harmon Clayton Killebrew. Rare full name! Comes with a JSA Letter of Authenticity. Ships FedEx with Insurance and