Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners Auto Grade Gem Mint 10 Beckett BAS #18629994
Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners Auto Grade Gem Mint 10 Beckett BAS #18629994 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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Collector Grade autographed and signed memorabilia: Ken Griffey Jr. 1989 Upper Deck Rookie Card #1 with Beckett BAS Gem Mint 10 autograph, encapsulated and authenticated for long-term value. Ken Griffey Jr., the 1997 AL MVP and 13-time All-Star, smashed 630 home runs and entered the Hall of Fame in 2016 on the first ballot. A Seattle Mariners icon known as “The Kid,” he also earned 10 Gold Gloves in center field.
Collector's Highlights:
- Athlete: Ken Griffey Jr.
- Item: 1989 Upper Deck Rookie Card #1 (Seattle Mariners) — hand-signed; Autograph Grade Gem Mint 10; BAS Cert #18629994; encapsulated in Beckett’s tamper-proof holder
- Authentication: Beckett Authentication Services (BAS) — autograph graded Gem Mint 10, ensuring verified authenticity and market trust
Backed by Beckett BAS, this verified authentic Griffey rookie autograph is a secure, collector-grade piece that honors one of baseball’s greatest careers and anchors any serious MLB memorabilia collection.
