This is an Official Dodgers Logo Baseball that has been hand signed by 25 members of the 1988 World Series Champion Los Angeles Dodgers. Notable signatures include Tommy Lasorda, Don Sutton, Kirk Gibson, Fernando Valenzuela and Orel Hershiser. This item has been certified authentic by Beckett Authentication (BAS) and comes with their tamper-proof hologram and matching full-page certificate of authenticity.