Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners BGS 7 Auto Grade Gem Mint 10 Beckett BAS #20520250
Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners BGS 7 Auto Grade Gem Mint 10 Beckett BAS #20520250 is backordered and will ship as soon as it is back in stock.
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Authenticity Guaranteed
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 rookie card memorabilia, signed by Ken Griffey Jr., authenticated by Beckett—1989 Upper Deck #1 with BGS 7 card grade and BAS Gem Mint 10 autograph (Beckett #20520250). A 2016 first-ballot Hall of Famer, Griffey launched 630 home runs, won the 1997 AL MVP, and made 13 All-Star teams. His smooth lefty swing and 10 Gold Gloves made him the face of 1990s baseball and a Seattle Mariners icon.
Collector's Highlights:
- Athlete: Ken Griffey Jr.
- Item: 1989 Upper Deck Rookie Card #1 – Seattle Mariners – BGS 7; BAS Autograph Grade Gem Mint 10; Beckett serial #20520250
- Authentication: Beckett Authentication Services (BAS) and Beckett Grading Services (BGS); encapsulated in Beckett’s tamper-proof holder
Backed by Beckett BAS and secured in a BGS slab, this verified authentic Griffey rookie autograph offers trusted long-term collectability. It’s the hobby’s most recognizable rookie paired with a Gem Mint 10 signature—exactly what serious baseball memorabilia buyers look for.
