The Beckett Baseball Card Monthly Issue #64 July 1990 featuring Ken Griffey Jr is a vintage baseball sports trading card publication by Beckett Media. This original magazine highlights the Seattle Mariners player and provides valuable insights and information for collectors and fans of baseball memorabilia. With Beckett Authentication Services (BAS) ensuring the legitimacy of any autographs, this paperback format magazine from the United States is a must-have for any baseball card enthusiast looking to explore the world of sports trading cards.