Ken Griffey Jr Autographed Seattle Mariners Nike MLB Jersey - Beckett Authenticated

This jersey features Ken Griffey Jr’s authentic autograph, verified by Beckett Authentication Services. It serves as a verified collectible, reflecting his impact throughout his tenure with the club and providing provenance for collectors and fans alike.

✅ 100% Authenticity Guaranteed

🏆 Certificate of Authenticity/Holographic Sticker included 

📦 Secure & Insured Delivery

Please note: we stock multiple units of this item, so the certification ID and player signature may vary slightly between jerseys. Each piece remains fully authenticated and individually verified.

A premium collectible for any serious baseball fan or memorabilia collector, combining verified authenticity with trusted sourcing and long-term display value.