Seattle Mariners Ken Griffey Jr. Autographed White Authentic Mitchell & Ness 1989 Authentic Cooperstown Collection Jersey Size L Beckett BAS Witness Stock #212479
Seattle Mariners Ken Griffey Jr. Autographed White Authentic Mitchell & Ness 1989 Authentic Cooperstown Collection Jersey Size L Beckett BAS Witness Stock #212479 is backordered and will ship as soon as it is back in stock.
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100% Authenticity Guaranteed
All signatures sold on Pristine Marketplace are 100% guaranteed authentic, offering buyers complete confidence in every purchase.
Each autographed item undergoes rigorous verification through trusted authentication providers—including Beckett Authentication Services (BAS), James Spence Authentication (JSA), Fanatics Authentic, or Pristine Auction’s own in-house standard, Pristine Authentic.
This unwavering commitment to authenticity protects collectors and fans alike, making every signed piece not just a display item, but a trusted investment.
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Own a piece of baseball history with this White Authentic Mitchell & Ness Seattle Mariners 1989 Authentic Cooperstown Collection Jersey, personally hand-signed by Ken Griffey Jr. A must-have for Mariners fans and collectors, this stunning jersey celebrates the early years of one of MLB’s most legendary players.
- Authentic Mitchell & Ness 1989 Cooperstown Collection Jersey – a high-quality throwback to Ken Griffey Jr.'s early career with the Seattle Mariners.
- Hand-signed by Ken Griffey Jr. – a rare and valuable collector’s item featuring the autograph of the Hall of Famer and baseball icon.
- Size L – ready for display or wear for the ultimate fan experience.
- Certified Authentic by Beckett Authentication (BAS) – includes a tamper-proof witness sticker for verification.
- Beckett Certification Policy – Beckett has transitioned away from physical certificate cards. A digital certificate matching the authentication number can be printed from Beckett’s website.
