The 2001 Donruss Signature Series Pedro Martinez #107 Signature Proof /175 trading card is a highly sought-after collectible for baseball fans and card collectors. This limited edition card features the signature of the legendary player Pedro Martinez, who played for the Boston Red Sox during the 2001 season. With only 175 copies in existence, this parallel variety card is serial numbered and part of the base set, making it a valuable addition to any sports memorabilia collection. The card showcases Martinez in his prime, making it a must-have for fans of Major League Baseball.