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

Add a legendary piece of Seattle Mariners history to your collection with this Edgar Martinez Autographed White Nike Cooperstown Collection Jersey (Size L). One of the greatest designated hitters in MLB history, Martinez was a seven-time All-Star, five-time Silver Slugger, and a 2019 Hall of Fame inductee.

This premium White Nike Cooperstown Collection jersey features classic Mariners styling, complete with fully stitched name and numbers. Edgar Martinez’s bold signature is prominently displayed on the back number, making this an exceptional display piece for Mariners fans and baseball collectors.

This is an officially licensed Nike Cooperstown Collection jersey (not a custom jersey), offering authentic MLB-quality fabric, stitching, and detailing. Jersey size: Large (L).

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

Perfect for framing, man caves, memorabilia displays, or as a gift for Mariners diehards, this signed Edgar Martinez jersey is a premium collectible honoring an all-time Seattle great.

Your order includes Free Shipping & Free Returns, professionally packaged and fully insured for safe delivery.

Product Highlights

• Hand-signed by Mariners legend Edgar Martinez
• Official Nike Cooperstown Collection Jersey
• Jersey Size: L (Large)
• Fully stitched name & numbers
• Authenticated by Beckett BAS Witness
• Includes tamper-proof BAS Witness hologram
• Ideal for framing & premium display setups
• Free Shipping & Free Returns within the USA

Specifications

Authenticity

This jersey is authenticated by Beckett Authentication Services (BAS Witness). Each autograph is witnessed in person by a Beckett representative to ensure permanent, verifiable authenticity.

Display & Care

• Ideal for framing in a full-size display case
• Store out of direct sunlight to preserve the signature
• Handle with care prior to framing to avoid wrinkles
• Display-only item — not intended for wear

Shipping & Returns

• Free Shipping: Fast, insured shipping across the U.S.
• Free Returns: 30-day money-back guarantee
• Secure Packaging: Carefully folded, bagged & boxed for protection