Seattle Mariners Ken Griffey Jr. Autographed White Authentic Mitchell & Ness 1989 Authentic Cooperstown Collection Jersey Size XL Beckett BAS Witness Stock #212478

Own a piece of baseball history with this White Authentic Mitchell & Ness Seattle Mariners 1989 Cooperstown Collection Jersey, hand-signed by legendary Hall of Famer Ken Griffey Jr. This jersey, in Size XL, is a must-have for serious collectors and Mariners fans alike.

• Hand-signed by Ken Griffey Jr. – One of the greatest outfielders in MLB history and a 13-time All-Star.
• Official Mitchell & Ness Cooperstown Collection Jersey – Faithfully crafted to match the 1989 Seattle Mariners uniform.
• Authenticated by Beckett Authentication Services (BAS) – Includes tamper-proof witness sticker for guaranteed authenticity.
• Size XL – Perfect for framing, display, or wearing to celebrate the legacy of "The Kid."
• Historical Significance – 1989 marks Ken Griffey Jr.'s rookie season, making this piece especially valuable to collectors.
• Easy Certificate Access – Beckett Authentication no longer provides physical certificates, but a matching authentication number allows verification and certificate printing on Beckett's website.

This Ken Griffey Jr. autographed Mariners jersey is more than just memorabilia—it's a timeless tribute to one of baseball's most iconic players. Whether you’re adding to your collection or gifting a die-hard fan, this authenticated jersey is the perfect choice. Secure yours today before it's gone!