In an art market where claims of authenticity and condition are sometimes elastic, TEFAF Maastricht has built its reputation on an absolute: every object presented at the fair has been examined by a committee of independent experts before it is visible to any collector, curator, or member of the public. This commitment to vetting is not marketing language. It is a logistical operation of extraordinary complexity, and it is the primary reason TEFAF carries a level of institutional trust that no other art fair on earth can match.
How the Vetting Committee Is Structured
TEFAF assembles a vetting committee of approximately 175 experts each year. These are scholars, curators, dealers, scientists, and conservators with deep specialist knowledge across more than 20 categories of art and antiques — from Old Master paintings and ancient sculpture to Art Deco jewellery, Asian art, medieval manuscripts, and postwar contemporary works. The committee is not static; it evolves each year as TEFAF adds categories and as individual experts' availability changes.
The committee operates in category-specific teams. An expert in 17th-century Dutch painting will review only works in that area; a specialist in Meissen porcelain will not be asked to evaluate a Cycladic marble figure. This specialisation is fundamental to the process' credibility — a generalist opinion is worth very little when the question is whether a specific attribution to Vermeer is sustainable.
What Happens During Vetting
Vetting takes place in the two days before TEFAF opens to the public — typically a Tuesday and Wednesday — during which the fair floor is closed to everyone except participating dealers, their staff, and the vetting teams. Experts move from booth to booth examining every object on display. They are not inspecting only for outright forgeries (which are rare at this level); they are verifying attributions, condition descriptions, dating, provenance claims, and compliance with relevant cultural property laws.
When a committee has questions about a specific work, the dealer is notified and given an opportunity to provide additional documentation or argument. In some cases, a work may be referred to additional specialist opinion. In the most serious cases — where the committee cannot resolve its concerns — the work is required to be removed or masked before the fair opens. This does happen. A significant number of objects are challenged or withdrawn each year, and dealers who have shown at TEFAF for decades are not exempt from scrutiny.
The Provenance Dimension
Provenance review is an increasingly important dimension of the TEFAF vetting process. The fair requires dealers to provide provenance documentation for all works, and the committee examines these documents with particular attention to the period between 1933 and 1945 — the years during which Nazi Germany systematically looted art from Jewish collectors and public institutions across Europe. Works with gaps in their ownership history during this period are subject to heightened scrutiny, and TEFAF has been a leader in establishing market standards for provenance research and disclosure.
For collectors, this dimension of the vetting process is not merely ethical — it is practical. A work with unresolved provenance questions is a legal and reputational liability, regardless of how beautiful it is. Buying at TEFAF does not guarantee a clean provenance, but the vetting process provides a meaningful layer of protection that most other fair contexts do not.
What Vetting Cannot Do
The TEFAF vetting process is the most rigorous in the art market, but it is not infallible, and TEFAF does not represent it as such. The committee works under significant time pressure and with the physical constraints of a fair booth — without access to laboratory analysis, which can take weeks. Expert opinion, however informed, is not the same as scientific certainty. Sophisticated collectors understand this and treat the TEFAF guarantee as a meaningful but not absolute assurance.
What the vetting process does guarantee, in practice, is that an object presented at TEFAF has been seen by knowledgeable eyes in the relevant category, that its condition has been assessed with reasonable care, and that the dealer presenting it has been willing to subject it to scrutiny. In a market where those assurances are far from universal, that is a great deal.