Is a COA proof that an autograph is real?

No. It is a statement from whoever issued it. Check who that is, whether the number can be looked up, and whether the description matches your item.

In the presence. It means someone says they watched the signer sign. It is evidence, but it depends on whose account it is and whether you can verify it.

Do league hologram programs cover every signed item?

Not necessarily. Each program defines what it labels. Read the league's own page to see what its hologram claims.

Where can I report suspected counterfeit memorabilia?

The IPR Center accepts reports through an online form and a hotline. Keep your records before you report.

Memorabilia Authentication Basics: What a COA Does and Doesn't Prove

2026-11-09 · By CollectorsTrend Editorial · General information, not appraisal, tax, legal or investment advice

A buyer's guide to certificates, labels and lookups, with questions to ask before you pay.

Signed baseball with a hologram sticker and certificate on a table

A signed baseball with a certificate looks reassuring. The certificate may be worth a lot or very little, depending on who issued it and what it actually says. This guide explains the basic terms of memorabilia authentication, gives you questions to ask, and stays within what we could confirm from published sources.

What we could and could not verify

We tried to read the pages of the services and leagues that run authentication programs. On Nov. 10, 2026, the MLB authentication page, Beckett's authentication page and the FBI's Operation Bullpen page would not load for our fetch tool. The JSA home page loaded with no readable program description, and the NHL address we tried returned an error page. So this guide does not describe any one company's or league's rules. It tells you what to look up on those sites, and it gives the general reasoning you can use with any of them.

What a COA is and is not

COA stands for certificate of authenticity. In practice it is a document that says an item is genuine. The key question is who wrote it. A letter from the seller who is also asking for your money is a statement from an interested party. A letter or sticker from an independent service that opinion-tests the item, and keeps a record you can look up, is a different kind of document. Even then, it is an opinion from that service, and its weight depends on that service's track record and process, which you should research yourself.

A COA is not the item. A paper certificate can be separated from the object, copied or printed for something else. Ask whether the certificate carries a number, whether the issuer has a lookup where you can enter that number, and whether the description matches your piece in detail: item, signer, date or event if stated, and any photo.

Third-party services and league programs

Two kinds of providers come up often. Independent authentication companies, such as PSA/DNA, JSA and Beckett Authentication Services, offer authentication services under their own rules. Professional sports leagues, including MLB, the NBA and the NHL, describe their own authentication programs and hologram labels on their official sites. Their claims differ, which is why you read each one rather than assume a label means the same thing everywhere.

For each one, read the provider's own page and answer these questions:

What exactly does the label or hologram claim: that the item was witnessed, that it was examined, or that it came from a game or event?
Is there a public lookup by serial number? Enter the number and see whether the details match your item.
Does the program cover only items it labeled itself, or will it opine on any item sent in?
What does the provider say about disputes and about reconsidering an opinion?

In the presence versus third-party

"In the presence", often shortened to ITP, means someone saw the signer sign. It can be a company representative, an event organizer or the seller. "Third-party" means an outside service examined the finished item and gave its opinion. These are different kinds of evidence. ITP depends on who was in the room and whether you can verify their account. Third-party review depends on the examiner's process and the quality of the comparison material. Neither is a proof. Both are worth more when they come with dated photos, an event record and a lookup number you can test.

Red flags

The only proof is a certificate issued by the seller or by a company you can't find any record of.
The label has no number, or the number returns nothing in the provider's own lookup.
The seller refuses to show close-up photos of the signature, the label and the item together.
The item changed hands several times with no one able to say where it came from.
You are pressured to pay quickly or by a method the FTC warns about: cryptocurrency, wire transfer, payment app, gift card, or depositing a check and sending money back.
A price far below comparable listings with no clear reason.

Protect yourself at the point of purchase

CBP's consumer guidance says to buy from retailers you trust. You can add a few habits. Ask for the provenance in writing before you pay. Keep the listing and messages. Use a payment method that lets you dispute a charge. Read the marketplace's buyer protection rules, because they vary: for example, eBay's Money Back Guarantee page says counterfeit claims are handled differently from ordinary not-as-described claims, and that trading cards have a shorter window for some claims. That means you may need a specific process, not just the standard return button.

Known forgery cases

Law enforcement has investigated forged sports memorabilia in the past. We could not load the FBI's case pages on Nov. 10, 2026, so we are not describing any case or figure. If you want to read about them, search the FBI's own site, and rely on the agency's text instead of a secondhand summary. To report suspected counterfeit goods, the IPR Center accepts reports through an online form and a hotline, says reporting can be anonymous, and asks you to keep your original records.

What to do next

Before you buy a signed piece, write down who authenticated it, how you can verify that claim online, and what happens if the provider's opinion changes. If you can't answer all three, wait.

General information only, not legal, tax, appraisal or investment advice. Prices, fees and policies change; confirm with the company or a qualified professional before you act.

Sources

IPR Center, report IP theft, checked 2026-11-10
FTC, How To Avoid a Scam, checked 2026-11-10
eBay Money Back Guarantee policy, checked 2026-11-10
CBP, Intellectual Property Rights, checked 2026-11-10

Frequently asked questions

Is a COA proof that an autograph is real?: No. It is a statement from whoever issued it. Check who that is, whether the number can be looked up, and whether the description matches your item.
What does ITP mean?: In the presence. It means someone says they watched the signer sign. It is evidence, but it depends on whose account it is and whether you can verify it.
Do league hologram programs cover every signed item?: Not necessarily. Each program defines what it labels. Read the league's own page to see what its hologram claims.
Where can I report suspected counterfeit memorabilia?: The IPR Center accepts reports through an online form and a hotline. Keep your records before you report.

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General information only, not appraisal, tax, legal or investment advice. Prices, fees and policies change; confirm with the company or a qualified professional before you act. CollectorsTrend does not grade, authenticate, buy, sell or endorse any business listed. Sponsored placements are paid and always labeled.