Own a piece of baseball history with this Ken Griffey Jr. signed 1989 Upper Deck #1 Rookie Card from his time with the Seattle Mariners. This iconic rookie card is a must-have for serious collectors and fans of "The Kid." Hand-signed by Ken Griffey Jr., this card has been professionally slabbed and authenticated by Beckett, receiving a prestigious autograph grade of 10.

• Authentic Signature: Hand-signed by Ken Griffey Jr., one of the greatest players in MLB history.
• Graded Autograph: Beckett Authentication Services (BAS) has certified this signature with a perfect 10 grade.
• Iconic Rookie Card: Features Griffey in his Seattle Mariners rookie season, making it a cornerstone for any baseball memorabilia collection.
• Slabbed & Protected: Encased in a Beckett slab for long-term preservation and display.
• Great Investment Piece: Griffey remains a legendary figure in MLB, ensuring the lasting value of this collectible.

This Ken Griffey Jr. autographed rookie card is a must-have for Mariners fans, vintage card collectors, and baseball history enthusiasts. Add this rare gem to your collection today!