A vintage Mickey Mantle signature that displays as a single is hard to locate. But here is one such ball - an official National League (Frick), evenly-toned model that grades EX-MT. The 12 signatures represent the 1952 and 1953 rosters and average 6 out of 10 with one being a 2. Mantle's is a stunning 8 out of 10 in blue ink on a side panel by himself.