Great experience once again! From start to finish Powers Sports Memorabilia hit it out of the park on my Ricky Williams Newpapers.
Sports Memorabilia Certificate of Authenticity vs. Letter of Authenticity
If you're buying autographed sports memorabilia, you'll likely encounter the terms Certificate of Authenticity (COA) and Letter of Authenticity (LOA).
Although both are used in sports memorabilia autograph authentication, they serve different purposes and are typically used for different types of signed collectibles.
Understanding the difference can help you make better buying decisions and avoid confusion when purchasing authenticated memorabilia.
What Is a Certificate of Authenticity (COA)?
A Certificate of Authenticity (COA) is a document issued by an authentication company stating that an autograph has been examined or witnessed and entered into the company's authentication database.
Today's trusted authentication companies—including Beckett Authentication Services, JSA, and PSA—use unique authentication numbers that match the hologram attached directly to your memorabilia.
Rather than relying solely on a printed certificate, collectors can verify the authentication online using the matching certification number.
How Does a Certificate of Authenticity Work?
Modern Certificates of Authenticity are much simpler than they were years ago.
Most contain:
- A unique authentication number
- The authentication company's branding
- Instructions for verifying the certification online
The same authentication number appears on the hologram attached directly to the signed memorabilia.
Those matching numbers permanently connect the certificate to that specific autograph.
Older Certificates of Authenticity often listed the athlete's name and item description. While those still exist, most modern authentication companies now rely on their online databases for detailed information.
Do Witness Autographed Sports Memorabilia Items Receive a COA?
Usually, they do not.
With modern witness autograph authentication, companies such as Beckett, JSA, and PSA generally apply only a witness authentication hologram directly to the memorabilia.
There is typically no separate matching Certificate of Authenticity.
Instead, the hologram itself acts as the authentication record.
Collectors simply scan the QR code or enter the authentication number online to verify the autograph, the athlete, the item, the signing date, and, in some cases, the signing location.
What Is a Letter of Authenticity (LOA)?
A Letter of Authenticity (LOA) is a much more detailed authentication document.
Rather than being issued for most everyday memorabilia, LOAs are generally reserved for higher-end collectibles where additional documentation provides greater confidence.
Examples include:
- Michael Jordan autographs
- Mickey Mantle autographs
- Babe Ruth autographs
- High-end vintage autographs
- Rare game-used memorabilia
Because these collectibles can be worth thousands—or even tens of thousands—of dollars, authentication companies often provide much more documentation than a standard COA.
What Information Is Included on a Letter of Authenticity?
A Letter of Authenticity generally includes:
- A photograph of the exact signed item
- A detailed description of the memorabilia
- A unique authentication number
- The authentication company's opinion regarding authenticity
- The authenticating expert's signature
- A matching authentication sticker or hologram
Including a photograph of the exact item gives collectors additional confidence that the LOA belongs to that specific piece of memorabilia.
Where Does the Authentication Sticker Go?
When memorabilia receives an LOA, you'll generally receive both:
- The Letter of Authenticity
- A matching authentication sticker
Collectors often have the option of placing the authentication sticker directly on the memorabilia or having it attached to the Letter of Authenticity instead.
Many collectors choose to place the sticker on the item, while others prefer keeping valuable vintage memorabilia free of stickers and attaching the hologram to the LOA.
Why Are Letters of Authenticity Notarized?
Letters of Authenticity issued by trusted companies such as JSA, PSA, and Beckett are often notarized.
For example, a JSA Letter of Authenticity signed by Jimmy Spence is notarized to verify that Jimmy Spence personally signed the authentication document.
The notarization does not authenticate the athlete's autograph.
Instead, it verifies the authenticity of the signature appearing on the Letter of Authenticity itself and confirms that it was executed by the proper representative of the authentication company.
Always Verify Your Sports Memorabilia Authentication
Whether your memorabilia includes a COA or an LOA, you should always verify the authentication number through the company's online database.
Trusted authentication companies such as:
- Beckett Authentication Services
- PSA/DNA
- James Spence Authentication (JSA)
allow collectors to search authentication numbers online.
If an authentication company doesn't provide an online database—or if the authentication number can't be verified—you should be extremely cautious.
A piece of paper by itself does not make an autograph authentic.
The reputation of the authentication company is what matters.
Which Is Better for Sports Memorabilia Authentication?
Neither is automatically better.
They simply serve different purposes.
A Certificate of Authenticity is commonly used for standard authenticated memorabilia and relies on matching certification numbers and online verification.
A Letter of Authenticity provides significantly more documentation and is generally reserved for premium sports memorabilia and valuable autographs.
The most important factor isn't whether you receive a COA or an LOA.
It's whether the autograph was authenticated by a trusted company like Beckett, PSA, or JSA.
Final Thoughts
Both Certificates of Authenticity and Letters of Authenticity play an important role in sports memorabilia autograph authentication.
Modern COAs rely on matching authentication numbers and online databases, while LOAs provide additional documentation, photographs, and expert authentication for higher-value collectibles.
Before purchasing any signed sports memorabilia, verify the authentication number through a trusted company like Beckett, PSA, or JSA. A recognizable name and a searchable online database are far more valuable than a generic certificate from an unknown company.
Related Guides
- What Is Sports Memorabilia Authentication?
- What Is Witness Autograph Authentication?
- PSA vs. Beckett vs. JSA: Which Authentication Company Should You Use?
- How to Verify an Autograph Authentication Number
- Basic Authentication vs. Witness Autograph Authentication
コメントを残す
コメントは表示される前に承認されます。
Customer Reviews
Overall rating: 4.9 / 5 from 4855 reviews.
Finally caught the ghost!!!
Great to add another one to the 70 Topps set. Fantastic service!
All hail the Chief!!! Robert Parrish .. 4x NBA champion inscription.. Double 00..
I waited a long time for this one especially being a huge fan of the Showtime era Lakers. Kevin Mchale was a thorn in my side but I have the utmost respect for him and the Celtics.. A great addition to my growing collection..
The Hall of Fame ticket!! Earl Campbell thanks to the team at PSM!! Keep up the good work!!
My new favorite Funko!! #1 … Warren Moon
Nice autograph
The autograph looks great and full
Signature smaller than I requested...
Came out great!
Came out good
PSM always does an excellent job. They took care of my Dream rookie card. I like the fact that when I send my items into PSM I never have to worry about them.
The CJ auto hits for me. Upper Deck, sharp placement, and honestly, it makes my collection much better. Greatly appreciate the auto.
AWESOME
So awesome
Beautiful
Sweet
Beautiful
Great piece
Awesome
Smooth transaction
AWESOME
Beautiful piece of memorabilia!!!
To finally get one of my baseball idols is an absolute dream come true but to get this card with an on card auto really made it all worth the wait! Thank you!!
Excellent service with this signing. Thank you!
Autograph came out great!
Awesome experience as always, I’d highly recommend Powers to anyone looking to expand their sports memorabilia collection!
Once again, Powers Sports came through big time! I had been waiting for many, many years to have this mini helmet signed by Carson Palmer. With special thanks to Natalie and Mathew, they were able to coordinate this endeavor exactly as I wanted it. Excellent autograph, perfectly positioned, using the exact paint pen requested and the C.O.A. sticker positioned right where I wanted it. Thank you folks so very much!
Matt and his team did a great job as usual. I highly recommend power’s!
Always great dealing with Powers. Got to watch Earl Singing on their website. Couldn't be happier with the helmet and the signature. Another perfect purchase. Thanks Powers crew!
I submitted 2 cards for signing by Dennis Rodman and came back very nice but one of the cards corner was damaged when returned back. Thank you Matt Powers and his team for this signing event.
I submitted 2 cards for signing by Hakeem Olajuwon & came back very nice. Thank you Matt Powers and his team for this signing event.
Power Sports Memorabilia is the best and always my "go to" autograph company to deal with. They are so accommodating and always get what you want and how you want it !!!! A+ on ALL counts !!!
I wasn't at the convention to be there for his signing. However, he has a killer autograph very happy with this autograph
Another great jersey signing!
PSM never let's me down. Another great auto on my multi signed piece. Thank you again.
The Barry Larkin auto in my PC is pure heat. Crisp ink, great placement, total keeper.
Just received by Bo Jackson Rookie Card back from Powers Sports Memorabilia. Once again, Powers Sports was able to get my card signed exactly as requested. Excellent signature, perfectly positioned and using the right kind and color marker.
Everything at Powers is first rate. They posted the videos on Facebook so I actually got to watch LT sign my helmet. And then they shipped me my helmet it's perfect could not be happier.
Your Cart
Your cart is empty.