Certificates
How do I know if a COA is legitimate?
A Certificate of Authenticity is a record of somebody’s opinion about an item. It is not proof, it is not a guarantee, and on its own it tells you nothing about the signature it arrived with. Fakes are sold with certificates every day — the paperwork is far easier to fake than the writing.
6 min read · educational reference, not an opinion of authenticity
What a certificate is, and what it is not
There is no licence required to issue a certificate of authenticity. There is no register to join, no standard to meet, and no penalty for being wrong. A certificate is a piece of paper with an opinion printed on it, and its entire value comes from one question: who formed that opinion, and what happens to them if it turns out to be wrong?
That question is worth asking in exactly those terms, because it cuts through everything else. A certificate from a named examiner with a long public record, tied to your specific item, verifiable at the source, and backed by a stated remedy is genuinely useful. A certificate from nobody in particular is decoration — and it costs a forger pennies against the mark-up it unlocks.
NoteCertificates are also counterfeited. Holograms get copied, serial numbers get invented, and letterheads from houses with real reputations get pasted onto fake items. This is why a serial has to be checked with the issuer rather than admired on the page.
The six ways a certificate fails
Most worthless certificates fail in one of a small number of recognisable ways. None of these is subtle once you know to look.
- It names no individual. “Authenticated by our team of experts” is not a name, cannot be questioned, and cannot be held to anything later.
- It does not illustrate your actual item. A generic card that could accompany any signature by anyone cannot tie the opinion to the object in your hands — and cards get swapped between items routinely.
- The issuer cannot be found. No traceable address, no working telephone, a website that appeared last year, no history of standing behind opinions.
- The serial cannot be verified. If the issuer has no record of the number, the number means nothing, whatever it looks like.
- The seller certified their own goods. It may well be honest, but it carries no independent weight beyond the seller’s own reputation.
- The certificate itself is a counterfeit of a real company’s paperwork — increasingly common with the best-known issuers.
How to verify a certificate in ten minutes
This is a short, practical sequence, and it is worth doing before money moves rather than after.
- Find the issuer yourself. Search for the company independently rather than using the contact details printed on the certificate — a counterfeit certificate carries a counterfeit phone number.
- Ask the issuer to confirm the serial or hologram against their records, and to confirm it was issued for the item you are actually looking at.
- Ask for the image the opinion was formed on. If the certificate cannot be tied to your specific item, it is describing something else.
- Check who signed it, and what that person’s record is with this particular signer. Experience with one field does not transfer automatically to another.
- Ask where the opinion is accepted. An opinion no auction house recognises will not travel with the item when you come to sell.
What a good certificate does
None of the following makes a certificate proof. What it does is make the opinion traceable to a person who can be asked about it — which is the most a piece of paper can honestly offer.
A certificate worth having illustrates your actual item clearly enough to identify it again, names the person who formed the opinion rather than only a company, carries a serial or hologram that exists in the issuer’s records, can be verified with the issuer today through a contact you found independently, states plainly what happens if the opinion is later shown to be wrong, and is accepted in the markets where you would actually sell.
It is also worth noting what a certificate cannot do: it cannot override what the signature itself is telling you. If the pen is wrong for the date, the certificate is wrong. Run the twelve checks on the item regardless of what came stapled to it.
Certificates and third-party grading
Third-party services that authenticate and encapsulate items occupy a middle position. Their opinions are accepted by many auction houses and marketplaces, which has real practical value when you sell. They are also opinions, they are sometimes wrong, and their stickers and slabs are themselves counterfeited.
Different dealers and houses take different views of which third-party opinions they accept, and some decline to recognise them at all. If a certificate matters to you because of resale, find out which opinions the market you intend to sell into actually accepts before you pay for one.
Piece of the Past publishes its own certificate structure — an illustrated letter with matching tamper-proof holograms above a price threshold, a hand-signed card below it — and states that its own certificate is among the most counterfeited in the trade. That is a useful admission: a certificate worth having is a certificate worth faking. Certificate tiers and terms above are as published by that company; confirm current terms with them directly.
If you already bought something with a bad certificate
Keep everything. The item, the certificate, the listing screenshots, the messages, the payment record. Do not clean, trim, or alter the item, and do not peel a sticker or hologram off to look underneath — you destroy evidence and value at the same time.
Then get an independent opinion from someone with no interest in the sale, and read the return terms of the platform you bought through. Marketplaces and card networks often have longer windows for items misrepresented as authentic than buyers expect. If you believe you have been defrauded, deliberate misrepresentation of an autograph is a reportable matter.
For what a professional examination involves and what it costs, see where to get an autograph authenticated.
The checklist
Work through the 12 autograph checks
Twelve checks, in the order an examiner actually uses them — the shape and physics of the writing first, then the object, then the paperwork. Any single clear failure is grounds to stop. Passing all twelve does not make an autograph authentic; it tells you the item is worth taking to a professional, and what to ask them.
Common questions
Questions people ask about this
- Can a fake autograph have a COA?
- Yes, and it very often does. A certificate is a printed opinion with no licensing requirement behind it, so a forger can produce one for a few pennies. Worse, certificates from respected houses are themselves counterfeited and attached to fake items. A certificate only adds anything when it names the person who formed the opinion, illustrates your actual item, and carries a serial you can verify with the issuer directly.
- How do I verify a certificate of authenticity?
- Look up the issuing company independently rather than using the contact details on the certificate, then ask them to confirm the serial number or hologram against their records and confirm it was issued for your specific item. Ask to see the image the opinion was formed on. If the issuer cannot be reached or has no record of the number, treat the certificate as though it does not exist.
- Is a COA from the seller worth anything?
- It carries no independent weight. A certificate written by the person selling you the item is a sales document, and it is worth exactly as much as that seller’s own reputation — no more. It may be entirely honest, but it cannot confirm anything, because nobody outside the transaction staked anything on it.