Reading a Certificate of Authenticity: What a Good One Says

Certificates of authenticity circulate freely in artifact collecting and vary enormously in what they are actually worth. Some are careful documents from people whose opinion carries weight. Some are decorative. Learning to tell them apart is one of the higher-return skills in collecting.

What a substantive certificate contains

• Identification of the specific object. Measurements, weight, material, distinguishing features and photographs that unambiguously match the piece in your hand. A certificate that could describe a hundred points documents none of them.
• What was examined and how. Was it seen in person or from photographs? Under what magnification? What lighting? A certificate that does not say is hiding the answer.
• The reasoning. The specific observations that led to the conclusion — the flaking characteristics, the patina distribution, the material identification.
• The limits. What could not be determined. Genuine expertise is comfortable saying so; only marketing is certain about everything.
• Attribution with a stated confidence. "Consistent with" is an honest and different statement from "is". Both are useful. Conflating them is not.
• A named individual, dated and signed. With a way to contact them.

Signals of an empty certificate

• Heavy graphic design — gold seals, ornate borders, embossing — carrying a single sentence of substance.
• A stated dollar value on an authentication document, particularly a suspiciously round one.
• No photograph, or a photograph that could be of any similar piece.
• No description of method.
• An issuing "institute" or "association" with no findable people behind it.
• Guarantees of future value or "investment grade" language.
• Issued by the seller, or by someone whose relationship to the seller is not disclosed.

The certificate is not the artifact

Two failure modes worth naming. First, certificates get separated from pieces and reattached to others — which is why the physical description and photographs matter more than the letterhead. Second, forged certificates exist, copying the format of well-regarded authenticators. If a certificate is doing significant work in a transaction, contacting the named authenticator to confirm they issued it is reasonable and most will not mind.

Whose opinion is it?

A certificate is one person's opinion, written down. Its weight comes from that person's experience with your specific material — not from the paper. An authenticator with forty years in Midwestern lithics is not automatically a useful voice on Southwestern ceramics, and a well-designed certificate does not change that.

Which is also why a second opinion on a high-value piece is normal practice rather than an insult, and why an authenticator who reacts badly to the suggestion has told you something.

Find an authenticator whose stated experience matches the material you hold.