NY Yankees Billy Martin Signed Autographed Page JSA COA MLB Baseball New YorkNY Yankees Billy Martin Signed Autographed Page JSA COA MLB Baseball Martin was an American Major League Baseball second baseman and manager. Martin was named the manager of the New York Yankees on five separate occasions between 1975 1988 JSA COA #AZ05031 Dimensions: 5" x 2. 75" Excellent condition. Autograph presents well with little to no smudging or bleeding. Edges are uneven due to being cut from a notepage. Please see photos, listed condition is