Seattle Mariners Edgar Martinez Autographed White Nike Cooperstown Collection Jersey Size XL Beckett BAS Witness

Add a Hall of Fame collectible to your Seattle Mariners memorabilia collection with this Edgar Martinez Autographed White Nike Cooperstown Collection Jersey, authenticated by Beckett BAS Witness.

Edgar Martinez, one of the greatest designated hitters in MLB history, spent his entire career with the Mariners and became a franchise icon thanks to his elite hitting, clutch postseason moments, and Hall of Fame résumé. A seven-time All-Star and two-time batting champion, Edgar remains one of Seattle’s most beloved sports legends.

This premium Nike Cooperstown Collection jersey features fully stitched name and numbers, classic Mariners styling, and the clean white colorway reminiscent of Seattle's retro uniform era. Edgar’s bold autograph is displayed beautifully on the back number, making this jersey an exceptional centerpiece for any collection.

The signature is authenticated by Beckett Authentication Services (BAS Witness). A Beckett representative personally witnessed the signing, and the jersey includes a BAS tamper-proof Witness hologram for lifetime verification.

Ideal for framing, shadow box displays, Mariners fan caves, or HOF-themed collections, this signed Edgar Martinez jersey is a must-have item for Seattle baseball fans.

Your purchase includes Free Shipping & Free Returns, securely packaged and insured for safe delivery.

Product Highlights

• Hand-signed by Mariners Hall of Famer Edgar Martinez
• Authentic Nike Cooperstown Collection Jersey
• White Mariners throwback design
• Fully stitched name & numbers
• Size: XL
• Authenticated by Beckett BAS Witness
• Includes tamper-proof BAS Witness hologram
• Perfect for framing, display, or Mariners memorabilia collections
• Free Shipping & Free Returns across the USA

Specifications

Authenticity

This jersey is certified by Beckett Authentication Services (BAS Witness). The in-person witnessed hologram guarantees 100% authentic and permanently verified signatures.

Display & Care

• Best displayed in a full-size jersey frame or shadow box
• Keep away from direct sunlight to preserve the autograph
• Handle carefully before framing to avoid creases
• Display-only collectible — not intended for wear

Shipping & Returns

• Free Shipping: Fast, insured U.S. delivery
• Free Returns: 30-day satisfaction guarantee
• Secure Packaging: Professionally folded, bagged & boxed for protection