Autograph Authentication & Grading Services

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.

PSA Services

Autograph Authentication

Have your prized autographs examined and authenticated by PSA’s authenticators.

Autograph Encapsulation

Encapsulate your prized autographs in one of our holders versus opting for the traditional Letter of Authenticity (LOA) or Certificate of Authenticity (COA).

Learn more

Card & Autograph Dual Grading

Two grades, one label. Get your autographed trading cards authenticated and receive a grade for both the card and the autograph.

Learn more

Submit in four easy steps


Submission Form

Download and print the submission form.

Download Now


Submission Price

Determine the price of your autograph submission.


Shipping Charges

Determine your return shipping charges.


Packaging Guidelines

Review and follow these packaging guidelines.

Curious about our Autograph Authentication process?

See the process

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.

Learn more

Autograph Baseball Grading

Not only can PSA grade your autographs, but we can grade the quality and condition of your baseball.

Learn more

RookieBall™ & RookieGraph™ Designations

See if your rookie autographs qualify for these special designations.

Learn more

More services from PSA


Get a PSA authenticator’s opinion before you bid on a potential purchase.

Learn more

In-The-Presence Autograph Authentication

Learn more about the best way to guarantee the authenticity of your autographed memorabilia.

Learn more

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.

Step 1


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.

Step 2


Once the autograph is deemed genuine, the item is marked with invisible ink that contains a synthetic DNA sequence specific to PSA. A certification sticker bearing an alphanumeric serial number is also provided.

Step 3


Either a Certificate of Authenticity (COA) or a Letter of Authenticity (LOA) is issued with the genuine autograph. The document contains the same alphanumeric serial number to match the label on the item.

Step 4


The certified autograph can be verified publicly using our online Certification Verification webpage or mobile application.

Our History

PSA is the world’s leading third-party authentication service for autographs and memorabilia.

PSA Autograph Authentication Services was founded by PSA in 1998 in response to widespread counterfeiting, forgery and piracy of autographed collectibles. Just as PSA grading changed the way cards and other collectibles are valued, bought and sold, PSA’s four-level authentication process has revolutionized the hobby of autograph and memorabilia collecting – making it safer and more enjoyable for all. PSA has authenticated hundreds of thousands of autographs and collectibles from the worlds of sports, music, entertainment, politics and history, including many of the most valuable of their kind.

Related Articles

Autograph Collecting 101
Read article
Wilt’s Signed Scoresheet from 100-Point Game Sells for $214,579
Read article
Inscriptions Can Turn Autographed Cards into Historical Markers
Read article
Perfect Penmanship: Recognizing Six Quality Autographs
Read article