This 2005 Donruss Diamond Kings Card #164, signed by Barry Zito himself, is a must-have for fans of the Oakland Athletics and San Francisco Giants, as well as collectors of baseball memorabilia. Authenticated by Beckett Authentication Services (BAS) with certification number 00016502678, this standard-size trading card is made of cardstock material and features an authentic autograph by Zito on the card itself. It is encapsulated in a Beckett Slab for added protection. Don't miss the opportunity to add this card to your collection. Autographed in blue Sharpie. Barry Zito Autographed Oakland Athletics Donruss Diamond Kings Baseball Card #164. This signature has been authenticated and encapsulated by the experts at Beckett Authentication Services (BAS). Certificate Number 00016502678.