''It ain't over 'til it's over.'' ''It's deja vu all over again.'' Known for his catching abilities, as well as his Yogi-isms, Yogi Berra played on 10 World Series championship teams and appeared in 14 World Series with the New York Yankees. Berra was selected to the All-Star team every year from 1948 to 1962 and was a three-time American League MVP. He called three no-hitters, one of them Don Larsen's perfect game in the 1956 World Series. Catch a piece of history with this official American League baseball, hand signed by Berra himself. A Steiner Sports Certificate of Authenticity is included.