Highlights:
- Seattle Mariners batting helmet signed by Ken Griffey Jr.
- Guaranteed authentic Griffey signature.

Item Details:
Between 1989 and 1999, Ken Griffey Jr. captured the hearts of Seattle fans with his smooth and powerful swing, his lights-out defensive play, and of course, his enthusiastic grin. After being away for nine seasons, playing with Cincinnati (2000-08) and the Chicago White Sox (2008), Griffey is back where it all started. Celebrate Griffey's Seattle homecoming with this Mariners batting helmet, autographed by 600 Home Run Club member himself.

Authenticity:
Upper Deck Authenticated guarantees the authenticity of Ken's signature on this batting helmet through its patented five-step authentication process. At the heart of the policy are the requirements that each signing be witnessed by an Upper Deck employee, and matching serially numbered holograms affixed to each signed item and its corresponding certificate of authenticity. Learn more about Upper Deck Authenticated's authentication process. In addition, the signature is also verified authentic through MLB's authentication program.