This 1971 YANKEES TEAM (28) THURMAN MUNSON SIGNED AUTHENTIC OAL CRONIN BASEBALL JSA #X87933 has been certified authentic. This 1971 team signed Rach Joe Cronin OAL ball is signed by 28 members including Thurman Munson. There are no clubhouse signatures on this ball which is rare for an early 70's Yankees team signed ball. Other notable signatures include Howard, Stottlemyer, Howser, Hegan, Gibbs, White, Houk, Alou, Hardin & Murcer. The ball itself is dated back to the 1970-73 era. It will include the JSA numbered hologram and matching Certificate of Authenticity.