Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners BGS 8 Auto Grade Gem Mint 10 Beckett BAS #20451188
Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners BGS 8 Auto Grade Gem Mint 10 Beckett BAS #20451188 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: Ken Griffey Jr. signed 1989 Upper Deck #1—Seattle Mariners memorabilia authenticated by Beckett. A first-ballot Hall of Famer in 2016, Griffey won the 1997 AL MVP, made 13 All-Star teams, and crushed 630 home runs. Known for his silky left-handed swing and 10 Gold Gloves, he’s one of baseball’s most complete superstars.
Collector's Highlights:
- Athlete: Ken Griffey Jr.
- Item: 1989 Upper Deck Rookie Card #1 (Seattle Mariners) — BGS Near Mint/Mint 8; BAS Auto Grade Gem Mint 10; Beckett BAS #20451188; encapsulated in tamper-proof holder
- Authentication: Beckett Authentication Services (BAS) certification and encapsulation; card graded by Beckett Grading Services (BGS)
This verified authentic Griffey rookie pairs the hobby’s most iconic modern RC with a Gem Mint 10 signature, backed by Beckett’s grading and BAS certification to protect long-term collector value and confidence.
