Ken Griffey Jr. Autographed Junior Book Seattle Mariners Beckett BAS Witness #1W901407
Ken Griffey Jr. Autographed Junior Book Seattle Mariners Beckett BAS Witness #1W901407 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, verified authentic autographed and signed memorabilia: Ken Griffey Jr. hand-signed “Junior” book, BAS Witness hologram #1W901407. A 2016 first-ballot Hall of Famer with 630 home runs, Griffey won the 1997 AL MVP and made 13 All-Star teams. He also earned 10 Gold Gloves in center field and remains the signature star of the Seattle Mariners.
Collector's Highlights:
- Athlete: Ken Griffey Jr.
- Item: Autographed “Junior” Book (Seattle Mariners)
- Authentication: Beckett Authentication Services (BAS) Witness — tamper-proof hologram #1W901407
This signed book comes witnessed and certified by Beckett, meaning a BAS representative observed the signature and applied the matching hologram. That guaranteed authenticity is exactly what serious collectors look for and helps protect long-term value, making this a rock-solid Griffey piece for any Mariners or MLB memorabilia collection.




