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Seattle Mariners Ken Griffey Jr. Autographed White Authentic Mitchell & Ness 1989 Authentic Cooperstown Collection Jersey Size XL Beckett BAS Witness Stock #212476

$899

⭑⭑⭑⭑⭑ 4.8/5 Stars from Real Collectors

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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 Cooperstown Collection Jersey, hand-signed by the legendary Ken Griffey Jr. A must-have for serious collectors and Mariners fans, this autographed jersey celebrates one of the greatest players in MLB history.

  • Hand Signed by Ken Griffey Jr. – One of the most iconic players in Seattle Mariners history.
  • Authentic Mitchell & Ness Jersey – Premium quality reproduction of the 1989 Mariners jersey.
  • Size XL – Perfect for display or wearing to celebrate your team.
  • Beckett Authentication (BAS) Certified – Witnessed authentication with a tamper-proof sticker for verified authenticity.
  • Easily Verifiable – Beckett no longer issues physical certificates, but authentication can be confirmed online using the matching number.

This jersey is a timeless tribute to a Hall of Fame career that saw Ken Griffey Jr. become one of baseball’s most electrifying players. Whether you're a longtime Seattle Mariners fan or a dedicated memorabilia collector, this signed jersey is an investment in baseball history. Secure yours today!

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