Ken Griffey Jr. & Ken Griffey Sr. Autographed Official MLB Baseball Seattle Mariners "Back To Back HR 9/14/90" Tristar Holo & Beckett BAS Witness Stock #212465
Ken Griffey Jr. & Ken Griffey Sr. Autographed Official MLB Baseball Seattle Mariners "Back To Back HR 9/14/90" Tristar Holo & Beckett BAS Witness Stock #212465 is backordered and will ship as soon as it is back in stock.
⭑⭑⭑⭑⭑ 4.8/5 Stars from Real Collectors
Free Shipping on U.S. Orders $99+
Free Shipping on U.S. Orders $99+
After payment is received, items will generally ship from Pristine Marketplace or our approved vendors within 2 business days.
Orders will ship via FedEx, UPS, or USPS for both domestic and international shipments.
60-Day Risk-Free Returns
60-Day Risk-Free Returns
Shop with total confidence. If you're not completely satisfied, return your item within 60 days for a full refund—no questions asked. Your satisfaction is 100% guaranteed.
100% Authenticity Guaranteed
100% 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.
Learn more
Fast & Secure Checkout
Own a piece of baseball history with this Official MLB Baseball signed by both Ken Griffey Jr. and Ken Griffey Sr.. This rare collectible commemorates their incredible father-son achievement, featuring an inscription by Ken Griffey Sr. that reads "Back To Back HR 9/14/90", celebrating their iconic back-to-back home runs on September 14, 1990.
- Hand-signed by Ken Griffey Jr. & Ken Griffey Sr. – Two legendary names in baseball history.
- Historic Inscription: "Back To Back HR 9/14/90" by Ken Griffey Sr.
- Dual Authentication: Certified authentic by Beckett Authentication (BAS) & TriStar.
- Tamper-proof Stickers: Includes Beckett & TriStar certification stickers for authenticity.
- Beckett Authentication Update: Beckett no longer issues matching physical certificates; a digital certificate can be printed from their website using the authentication number.
Perfect for serious collectors and devoted baseball fans, this signed baseball is a must-have tribute to one of the greatest father-son duos in sports history. Add this authenticated Ken Griffey Jr. & Sr. signed baseball to your memorabilia collection today!
