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OIMAP Partners

International organizations, approved auction houses and museums that cooperate with OIMAP.

Updated : October 28, 2026· 3 min read

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Action through a network

Saint Jerome and the Lion (From the former Church of St. Peter in Erfurt), Tilman Riemenschneider (c. 1495)
Saint Jerome and the Lion (From the former Church of St. Peter in Erfurt), Tilman Riemenschneider (c. 1495)

OIMAP does not protect heritage alone. It relies on three circles of partners: international organizations, approved auction houses and museums.

This section presents each circle on a dedicated page: international organizations, auction houses and museums.

  • Partners
  • Cooperation
  • Network

OIMAP partners in figures

4International framework agreements
140Partner museums (indicative)
23Coordinated operations in 2024
67Member States

Source: OIMAP General Secretariat.

Three pages

Breakdown

International organizationsFramework agreements
Auction housesApproved directory
MuseumsCooperation network

Indicative breakdown of partners by circle.

The Grotto of Posillipo, Hubert Robert (c. 1769)
The Grotto of Posillipo, Hubert Robert (c. 1769)
Lace Towel End (c. 1700s–1800s)
Lace Towel End (c. 1700s–1800s)
Farmhouse on the Slope of a Hill, Fra Bartolommeo (c. 1508)
Farmhouse on the Slope of a Hill, Fra Bartolommeo (c. 1508)

Why partners

Trafficking in cultural property, fakes and sales without documented provenance cross borders and professions. No administration holds all the information on its own. The Organization therefore exchanges with institutions that see other parts of the problem: customs, police, museums, salesrooms.

A partnership is never a mere label. It requires a written agreement, reciprocal commitments and an identified point of contact on each side.

Three complementary circles

The first circle brings together international organizations: the World Customs Organization, Interpol, UNESCO and the International Council of Museums. It covers information exchange, joint training and joint operations.

The second circle is that of approved auction houses, required to consult the BIOP database before each sale. The third, that of museums, shares its documentation and restitution practices.

What the Organization contributes

To partners, OIMAP provides a shared database, rapid alerts, Academy training and a coherent legal framework: the 2019 Guidelines and Directive No. 2019-07 on the authentication of cultural property.

It also offers a neutral place for dialogue between public and private actors, which makes it possible to handle delicate situations without waiting for litigation.

What partners contribute

Partners bring the Organization their knowledge of the field: customs seizures, laboratory expert reports, sale catalogues, collection inventories. This information enriches the BIOP database, which lists 48,200 works.

It also contributes to the quality of coordinated operations, 23 in 2024, and to the preparation of restitutions, 847 to date.

Partners at a glance

Three circles of cooperation
CircleExamplesNature of the cooperation
International organizationsWCO, Interpol, UNESCO, ICOMFramework agreements, training, operations
Auction housesDirectory of approved housesBIOP consultation, sale approval
MuseumsNetwork of 140 institutions (indicative)Documentation, restitutions, exhibitions

Milestones

  1. First agreements

    Exchanges of information with customs and international police (indicative).

  2. BIOP database

    Opening of the database to authorized partners.

  3. Directives

    Auction houses incorporate due diligence obligations.

  4. Museum network

    Structuring of the network of 140 museums (indicative).

Gathering among the Members of Office Censor-General (1700s)
Gathering among the Members of Office Censor-General (1700s)
The Apotheosis of Romulus: Design for a Ceiling, Domenico Maria Canuti (c. 1675–76)
The Apotheosis of Romulus: Design for a Ceiling, Domenico Maria Canuti (c. 1675–76)
The Four Seasons, Kano Tan’yū (1668)
The Four Seasons, Kano Tan’yū (1668)

Public or private partner

Portrait of a Man, Gustave Caillebotte (1880)

Public partners

Organizations and museums
  • Framework agreements
  • Data exchange
  • Joint actions

Institutional framework.

Edge of the Woods Near L'Hermitage, Pontoise, Camille Pissarro (1879)

Private partners

Auction houses
  • Annual approval
  • Due diligence obligations
  • Oversight by OIMAP

Professional framework.

Propose a partnership

  1. Present the organization

    Status, activities, references.

  2. Define the purpose

    Exchange, training, joint project.

  3. Write to the Secretariat

    Through the contact form.

  4. Review

    Review by the Cooperation Directorate.

  5. Signature

    Written agreement and point of contact.

Before approaching the Organization

A cooperation manager

Maharaja of Kotah Listening to Music and Watching Dancers (c. 1820)
« A solid partnership rests on two things: a clear agreement and a person you can call when a situation becomes difficult. »
Nadia Benali, cooperation officer (example)

Glossary

Framework agreement
General convention setting out the areas of cooperation.
Approval
Annual recognition of an auction house.
Diligence
Reasonable checks before a sale or an acquisition.
Point of contact
Person designated to liaise with the Organization.

Becoming a partner

Any institution that shares the Organization's objectives may propose cooperation. The request is reviewed by the Cooperation Directorate, which checks the applicant's independence, its reputation and the usefulness of the project for the Member States.

Detailed arrangements are set out on the Partners page of the institutional section. The dialogue begins with a message addressed to the General Secretariat.

Frequently asked questions

Are partnerships exclusive?

No. Each partner keeps its independence and may cooperate with other institutions.

Can a partner use the OIMAP name?

Only under the conditions set by the written agreement.

Where can I see the approved houses?
How can I contact the Organization?

See Contact.

Useful documents

Contacts

Châteauvieux-sur-Suran, Antoine-Claude Ponthus-Cinier (1848)
Châteauvieux-sur-Suran, Antoine-Claude Ponthus-Cinier (1848)
General SecretariatParis — Headquarters+33 1 00 00 00 00secretariat@oimap.exampleMonday to Friday, 9 am – 5 pm

See the partner organizations

Panel (c. 1780–1840)

Agreements with international institutions.

International organizations
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