This product is a 2020 Onyx Nimbus Silver trading card featuring an on-card autograph of Mason Martin from the Pittsburgh Pirates. This baseball card has a print run of 325 and authenticated by Onyx Authenticated. The autograph is hard-signed and includes the player's name, team, and card number (#NAMM) on the card. This rare and collectible trading card is a must-have for fans of Major League Baseball and collectors of sports memorabilia.