The product is a 1998 Team Best/Best Autographs Signature Series trading card featuring Ruben Mateo's signature. This single baseball card, signed by Mateo himself, is part of the 1998 Best Autographs Signature Series insert set. Manufactured in 1998 by Team Best, the card is made of 20 Pt. card stock and is from the Minor League Baseball (MiLB) era. It is a collectible item for fans of baseball trading cards.