Official American League (Mac Phail) baseball with 16 signatures from the 1978 World Champion New York Yankees. Some of the signatures, which are signed in different colors of ballpoint pen, include Reggie Jackson, Thurman Munson, Sparky Lyle, Graig Nettles and Willie Randolph. The ball grades a 6, and the signatures grade an overall 6. This is a tough ball to find in any condition.