The 1994 Upper Deck Ken Griffey Jr. #340 Seattle Mariners Team Checklist trading card is an original collector's item from the Major League Baseball (MLB) featuring the iconic player Ken Griffey Jr. The card is made of card stock and showcases a Silver Foil Signature variety, making it a sought-after piece for baseball fans and collectors alike. This vintage card from the 1994 Upper Deck Collector's Choice set includes a checklist feature, perfect for those looking to complete their collection of MLB memorabilia.