Official National League (Giamatti) baseball signed in either blue or purple ink by Mickey Mantle (sweet spot), Duke Snider (alone on a side panel), and Willie Mays (alone on a side panel). The signatures are all uniform in grade, averaging 8/10. The ball displays light, scattered age toning and is otherwise in Near Mint condition. Full LOA from JSA (with corresponding hologram label affixed to the ball).