An autographed baseball signed by several New York Yankees stars during the 2008 Old Timers' Day. The Official Major League Baseball (Selig) has been signed in blue ink by 23 players. Top signatures include Yogi Berra, Reggie Jackson, Don Larsen, Horace Clark, Hector Lopez, Paul Blair, Mickey Rivers, Bobby Richardson, and Al Downing. Jackson and Berra, the two Hall of Famers, have signed the ball on the sweet spot.