Authenticity · 6 min read

Certificates of Authenticity: What Must Be in the Document

'Certificate included' is a phrase that reassures buyers yet by itself means almost nothing: a form with a gold seal can be printed in an evening. A certificate's value is decided by who issued it and what exactly it says.

Who can legitimately issue one

For contemporary art, the strongest certificate comes from the artist or their official gallery — they are the primary source. For historical artists, its place is taken by an expert opinion from a recognised specialist, the artist's foundation or authentication committee where one exists.

A certificate from an anonymous 'experts association' connected neither to the artist nor to any recognised institution carries almost no legal or market weight.

The mandatory fields

A good certificate binds the document to one specific physical object — so that it cannot be attached to another work.

  • Artist, full title of the work, year of creation
  • Medium and materials, exact dimensions
  • A photograph of the work, ideally including the signature
  • Type: original, artist's print (edition number) or copy
  • Issuer: name, role, signature, date, contact details
  • A unique number tied to the invoice or inventory record

A certificate is not an expert opinion

A certificate is a statement by the seller or artist about the work's status. An expert opinion is the result of independent examination. For a new work by an emerging artist, a certificate plus a contract is enough; for an expensive work by a deceased master, a certificate without expertise is only the beginning of due diligence.

At NEOARCA the status of every work — original, print, quality copy — is fixed in the catalogue listing and in the sale documents, and a quality copy is always explicitly labelled as not an original.

Questions & answers

The work is sold without a certificate. Deal-breaker?

No. When buying directly from an artist, a certificate is easy to create at the point of sale — ask the artist to sign a document with the work's description and photo. It is more concerning when an intermediary gallery refuses to issue one.

Are certificates checked at resale?

Yes. Auction houses and galleries assess the source, not the paper: a certificate from the artist or a recognised expert counts; a shop's 'decorative' certificate does not.

What is a catalogue raisonné?

A comprehensive scholarly catalogue of an artist's entire body of work. Inclusion in a catalogue raisonné is among the strongest confirmations of authenticity for established artists' estates.

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