Authentication
PSA is the largest and most trusted autograph authentication service in the world. With over 35 million collectibles certified, PSA authenticates a vast array of signatures, ranging from sports to history and entertainment. Combining decades of experience with cutting-edge authentication techniques and a passion for the hobby, PSA continues to deliver a service collectors prefer.
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Add-On Services for Your Submission
Autograph Grading
Assign a numerical grade to your PSA-certified autograph, and it will set that autograph apart in the market.
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Autograph Baseball Grading
Not only can PSA grade your autographs, but we can grade the quality and condition of your baseball.
Learn more >More Services from PSA
In-The-Presence Autograph Authentication
Learn more about the best way to guarantee the authenticity of your autographed memorabilia.
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PSA Pre-Certified
Learn more about this unique service for auctions and prospective bidders.
Learn more >Autograph Authentication Process
Our authenticators have a diverse knowledge base that is complemented by proprietary methods and technology to form the following four-step authentication process.
Examination
PSA authenticators conduct ink analysis, autograph structure analysis, object evaluation and side-by-side comparisons.
Authenticators may also use a video spectral comparator to further evaluate the autograph.
Documentation
The certified autograph can be verified publicly using our online Certification Verification webpage or mobile application.
Encapsulation
After authentication and grading, PSA encapsulates the item. A blue label displays the pertinent information along with the certification number.