Griffey Jr. & Sr. Signed MLB Baseball “Back to Back HR” – BAS & Tristar
- Regular price
- $449.99
- Sale price
- $449.99
- Regular price
-
$587.49
Celebrate one of the most iconic father-son moments in MLB history with this Ken Griffey Jr. & Ken Griffey Sr. Autographed Official MLB Baseball featuring the historic inscription “Back To Back HR 9/4/90”. On September 4, 1990, the Griffeys became the first—and still the only—father and son duo to hit back-to-back home runs in a Major League Baseball game, creating a moment that will forever stand alone in baseball history.
This authentic Rawlings Official Major League Baseball has been hand-signed by both Ken Griffey Jr. and Ken Griffey Sr.. The ball includes the rare milestone inscription “Back To Back HR 9/4/90”, making it an extremely desirable dual-signed piece for fans, investors, and Mariners collectors.
This baseball includes dual authentication:
• Beckett Authentication Services (BAS) Witness Program — a Beckett representative personally witnessed the signing.
• Tristar Authentic Hologram — additional authentication and serial verification.
Together, these represent two of the most trusted names in sports authentication, offering unmatched collector confidence.
Enjoy Free Shipping & Free Returns on this premium Griffey collectible. Each baseball ships fully insured, professionally packed, and ready for display.
Product Highlights
- Dual-signed by Ken Griffey Jr. & Ken Griffey Sr.
- Historic inscription: “Back To Back HR 9/4/90”
- Authentic Rawlings Official Major League Baseball
- BAS Witness Program authentication
- Tristar tamper-proof hologram included
- Extremely rare father-son milestone collectible
- Free Shipping & Free Returns within the United States
Specifications
| Players | Ken Griffey Jr. & Ken Griffey Sr. |
|---|---|
| Team | Seattle Mariners |
| Item Type | Dual-Signed Official MLB Baseball |
| Brand | Rawlings Official Major League Baseball |
| Inscription | “Back To Back HR 9/4/90” |
| Authentication | Beckett BAS Witness + Tristar Hologram |
| Includes | Tamper-proof BAS Witness hologram & Tristar hologram |
| Condition | Brand New / Mint Autographs |
| Shipping | Free Shipping & Free Returns (U.S. only) |
Authenticity
This baseball carries dual certification for maximum provenance. Beckett BAS Witness guarantees both signatures were witnessed in person, while the Tristar tamper-proof hologram provides an additional layer of authentication and verification. Together, these make this dual-signed ball one of the most secure and trusted Griffey collectibles available.
Display & Care
- Store in a UV-protective baseball cube to prevent fading
- Avoid direct sunlight and high humidity
- Handle with clean hands or gloves
- Perfect for Mariners, Griffey family, or milestone-themed displays
Shipping & Returns
- Free Shipping: Fast, insured U.S. delivery
- Free Returns: 30-day no-hassle return policy
- Secure Packaging: Professionally boxed to protect your investment
Frequently Asked Questions
Is this an official MLB baseball?
Yes. This is an authentic Rawlings Official Major League Baseball.
Are both autographs authentic?
Yes. This item is certified by both Beckett BAS Witness and Tristar Authentic for maximum confidence.
Does this baseball come with a display case?
No, it does not include a case, but it fits all standard MLB display cubes.
Does this include free shipping?
Yes—every GameDay Sports Memorabilia purchase includes Free Shipping & Free Returns within the United States.
