PSA
JSA
BAS
100% Authentic
Authenticity Guaranteed
Every item at SDK Legends comes with a Certificate of Authenticity from industry-leading authentication companies. Your investment is protected by our lifetime guarantee.
100% Authentic • Lifetime Guarantee
Our Authentication Partners
PSA
Authenticator
Professional Sports Authenticator
The world's largest third-party authentication service. PSA has certified over 40 million collectibles since 1991. Verify Certificate →JSA
Authenticator
James Spence Authentication
Founded by James Spence Jr., one of the world's foremost autograph authentication experts with over 50 years of experience. Verify Certificate →BAS
Authenticator
Beckett Authentication Services
Part of the renowned Beckett brand, BAS provides trusted authentication backed by decades of expertise in sports collectibles. Verify Certificate →PANINI
Licensed Manufacturer
Panini America
Official licensed manufacturer of trading cards and memorabilia for NFL, NBA, FIFA, and more. Items include manufacturer COA. Visit Website →UPPER DECK
Licensed Manufacturer
Upper Deck
Premier sports and entertainment trading card company with exclusive agreements with Michael Jordan, Wayne Gretzky, and more. Visit Website →FANATICS
Licensed Manufacturer
Fanatics Authentic
Global leader in licensed sports merchandise with exclusive memorabilia partnerships across all major sports leagues. Visit Website →How Authentication Works
1
Expert Examination
Each signature is carefully examined by trained authentication experts using advanced forensic techniques.2
Verification Process
The signature is compared against extensive databases of known authentic exemplars and writing patterns.3
Certification
Approved items receive a unique certificate number, tamper-evident hologram, and official COA card.4
Online Database
Every certified item is registered in a permanent online database for easy verification by future owners.Our Lifetime Guarantee
Full Refund Promise
No Time Limit
Transferable to Future Owners
How to Verify Your Item
1
Find Certificate Number
Locate the unique certificate number on your COA card or hologram sticker.2
Visit Authenticator Site
Go to the official website of the authentication company (PSA, JSA, or BAS).3
Enter Certificate Number
Input your certificate number in the verification tool on their website.4
