Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners BGS 9.5 Auto Grade Gem Mint 10 Beckett BAS #20520241
Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners BGS 9.5 Auto Grade Gem Mint 10 Beckett BAS #20520241 is backordered and will ship as soon as it is back in stock.
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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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Description
Description
Collector-Grade autographed memorabilia: Ken Griffey Jr. signed 1989 Upper Deck Rookie Card #1 (Seattle Mariners) graded BGS 9.5 with a Beckett BAS Auto 10. A 13-time All-Star and the 1997 AL MVP, Griffey launched 630 home runs and was inducted into the Hall of Fame in 2016 with a then-record 99.3% of the vote. His iconic Upper Deck RC #1 is a pillar of the modern hobby and a must-have for serious Mariners and MLB collectors.
Collector's Highlights:
- Athlete: Ken Griffey Jr.
- Item: 1989 Upper Deck Rookie Card #1, Seattle Mariners — BGS 9.5 (Gem Mint); Beckett BAS Auto Grade 10; Beckett BAS #20520241; encapsulated in Beckett’s tamper-proof holder
- Authentication: Beckett Authentication Services (BAS) COA; card graded by Beckett Grading Services (BGS)
Verified authentic by Beckett, this Griffey rookie pairs elite card condition with a Gem Mint 10 signature—exactly what long-term collectors target for quality and confidence. Encapsulation and matching BAS details safeguard the autograph and card, honoring the legacy of one of baseball’s greatest center fielders.
