Ken Griffey Jr. Autographed 1988 Cal League Rookie Card #34 Seattle Mariners Auto Grade Gem Mint 10 Beckett BAS #19823430
Ken Griffey Jr. Autographed 1988 Cal League Rookie Card #34 Seattle Mariners Auto Grade Gem Mint 10 Beckett BAS #19823430 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 and signed Ken Griffey Jr. 1988 Cal League Rookie Card #34 memorabilia—Beckett BAS Auto Grade Gem Mint 10, securely encapsulated (Cert. #19823430). A first-ballot Hall of Famer inducted in 2016, Griffey launched 630 home runs (7th all-time). He won the 1997 AL MVP, earned 13 All-Star selections, and claimed 10 Gold Gloves while starring for the Seattle Mariners.
Collector's Highlights:
- Athlete: Ken Griffey Jr.
- Item: 1988 California League Rookie Card #34, hand-signed; BAS encapsulated; Auto Grade Gem Mint 10; Seattle Mariners; BAS #19823430
- Authentication: Beckett Authentication Services (BAS) — tamper-proof holder with Gem Mint 10 autograph grade and matching certification number
Verified authentic by Beckett, this early-career Griffey rookie issue delivers long-term collector confidence and real hobby value—an iconic signed card tied to one of baseball’s greatest careers.
