This 2005 Donruss Diamond Kings baseball card, autographed by Brad Penny, showcases the former major league player for the Boston Red Sox, San Francisco Giants, Arizona Diamondbacks, and Florida Marlins. The signature has been authenticated by Beckett Authentication Services (BAS) and comes with an autograph authentication number of 00016507936. Made of high-quality card stock material, this officially licensed trading card has the card number 269 and is a standard size. This certified hard format autograph, signed with a Black Sharpie, is a valuable addition to any baseball card collection and a must-have for fans of Brad Penny and the Florida Marlins. Encapsulated by the experts at Beckett Authentication Services (BAS), the signature has been verified with certificate number 00016507936.