OAL (Harridge) sphere is signed by eighteen Bombers, including Hall of Famers Ruth (sweet spot, 5/10), Gehrig (1/10), Ruffing, and Coombs. Other notables include Crosetti, Byrd, Allen, Farrell, and Van Atta. While the ball exhibits toning and discoloration, and many of the signatures have faded, Ruth is large and still readily identifiable. PSA LOA.