The Metallic Impressions Ken Griffey Jr 1998 Seattle Mariners #1 Base Set trading card is a vintage collectible made of tin featuring the legendary Major League Baseball player Ken Griffey Jr. This original card from 1998 showcases Griffey Jr during his time with the Seattle Mariners and is a must-have for any baseball card collector. The card is part of the Metallic Impressions set and is a valuable addition to any sports memorabilia collection