Yogi Berra Steiner & MLB Authenticated Autographed Hat-New York Yankees Legend Yogi Berra has personally hand-signed this New York Yankees hat. Regarded as one of the greatest catchers in baseball history Lawrence Peter YogiBerra played 18 seasons for the New York Yankees. Throughout his illustrious playing career Berra helped the Yankees win 10 World Series Titles and was voted 18 All-Star Games. The 3-time American League MVP has his number 8 retired by the New York Yankees and was inducted to Baseballs Hall of Fame in 1972. This Yogi Berra autograph is guaranteed authentic by Steiner Sports and includes a Steiner Sports Certificate of Authenticity and accompanying tamper-evident Steiner Sports Hologram. This item also includes an MLB Hologram Of Authentication. The Steiner Seal Means Its Real. Steiner Sports is the official Memorabilia Partner Of the New York Yankees.