The 2022 Bowman Chrome Shades of Greatness Auto Marcelo Mayer #SGAMM /99 trading card is a highly sought-after collectible in the baseball sports trading card market. This card features a rookie autograph from Marcelo Mayer, part of the Boston Red Sox team, and is graded a 9 by Professional Sports Authenticator (PSA). With a limited print run of 99, this serial-numbered card is a valuable addition to any sports memorabilia collection, showcasing Mayer's potential as a future star in Major League Baseball.