The 2021 Panini Prizm Draft Picks Baseball Marcelo Mayer Auto Autograph Silver is a highly sought-after sports trading card featuring an autograph from the talented baseball player Marcelo Mayer. This card is part of a set released by Panini for the 2021 baseball season and includes special features like being a parallel/variety card as well as a rookie card. With the potential for Mayer to be a standout player for either the Boston Red Sox or San Francisco Giants, this autographed card is a valuable addition to any sports card collection for fans and collectors alike.