Pages in this section
Partner international organizationsCooperation agreements with the WCO, Interpol, UNESCO and ICOM: purposes, tools and contacts.›
Approved auction housesThe directory of auction houses approved by OIMAP and their due diligence obligations.›
Partner museumsThe network of partner museums: collection documentation, restitutions and joint programmes.›
Action through a network

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.
OIMAP partners in figures
Source: OIMAP General Secretariat.
Three pages



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
| Circle | Examples | Nature of the cooperation |
|---|---|---|
| International organizations | WCO, Interpol, UNESCO, ICOM | Framework agreements, training, operations |
| Auction houses | Directory of approved houses | BIOP consultation, sale approval |
| Museums | Network of 140 institutions (indicative) | Documentation, restitutions, exhibitions |
Milestones
- First agreements
Exchanges of information with customs and international police (indicative).
- BIOP database
Opening of the database to authorized partners.
- Directives
Auction houses incorporate due diligence obligations.
- Museum network
Structuring of the network of 140 museums (indicative).



Public or private partner

Public partners
Organizations and museums- Framework agreements
- Data exchange
- Joint actions
Institutional framework.

Private partners
Auction houses- Annual approval
- Due diligence obligations
- Oversight by OIMAP
Professional framework.
Propose a partnership
- Present the organization
Status, activities, references.
- Define the purpose
Exchange, training, joint project.
- Write to the Secretariat
Through the contact form.
- Review
Review by the Cooperation Directorate.
- Signature
Written agreement and point of contact.
Before approaching the Organization
A cooperation manager

« A solid partnership rests on two things: a clear agreement and a person you can call when a situation becomes difficult. »
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?
See Auction houses.
How can I contact the Organization?
See Contact.
Useful documents
Contacts

See the partner organizations
Image credits (23)
- The Dance at the Court of Herod, Israhel van Meckenem (c. 1500) — Cleveland Museum of Art, CC0 1.0
- Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439) — Cleveland Museum of Art, CC0 1.0
- Saucer with Scene in style of Watteau (c. 1750–60) — Cleveland Museum of Art, CC0 1.0
- Bidri Hookah Bowl with Roses (c. 1650s) — Cleveland Museum of Art, CC0 1.0
- Saint Jerome and the Lion (From the former Church of St. Peter in Erfurt), Tilman Riemenschneider (c. 1495) — Cleveland Museum of Art, CC0 1.0
- Coronation of the Virgin, Christoffel Jegher (1632–36) — Cleveland Museum of Art, CC0 1.0
- Small Mosque in the Kaiserbagh, Felice A. Beato (1858) — Cleveland Museum of Art, CC0 1.0
- The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760) — Cleveland Museum of Art, CC0 1.0
- The Grotto of Posillipo, Hubert Robert (c. 1769) — Cleveland Museum of Art, CC0 1.0
- Lace Towel End (c. 1700s–1800s) — Cleveland Museum of Art, CC0 1.0
- Farmhouse on the Slope of a Hill, Fra Bartolommeo (c. 1508) — Cleveland Museum of Art, CC0 1.0
- Gathering among the Members of Office Censor-General (1700s) — Cleveland Museum of Art, CC0 1.0
- The Apotheosis of Romulus: Design for a Ceiling, Domenico Maria Canuti (c. 1675–76) — Cleveland Museum of Art, CC0 1.0
- The Four Seasons, Kano Tan’yū (1668) — Cleveland Museum of Art, CC0 1.0
- Portrait of a Man, Gustave Caillebotte (1880) — Cleveland Museum of Art, CC0 1.0
- Edge of the Woods Near L'Hermitage, Pontoise, Camille Pissarro (1879) — Cleveland Museum of Art, CC0 1.0
- Maharaja of Kotah Listening to Music and Watching Dancers (c. 1820) — Cleveland Museum of Art, CC0 1.0
- Châteauvieux-sur-Suran, Antoine-Claude Ponthus-Cinier (1848) — Cleveland Museum of Art, CC0 1.0
- Nowshera, Kashmir (number 1000), Samuel Bourne (1864) — Cleveland Museum of Art, CC0 1.0
- Vanity Case (Nécessaire) (c. 1760) — Cleveland Museum of Art, CC0 1.0
- A Palace with an Arched Bridge (A Roman Villa), Hubert Robert (1760) — Cleveland Museum of Art, CC0 1.0
- Pair of Drawings: Sketch of the Labyrinth of the Villa Pisani and Piazza San Marco with Doges' Palace, Francesco Guardi (1773–1778(?)) — Cleveland Museum of Art, CC0 1.0
- Panel (c. 1780–1840) — Cleveland Museum of Art, CC0 1.0
Cleveland Museum of Art · CC0 1.0


Partner international organizationsCooperation agreements with the WCO, Interpol, UNESCO and ICOM: purposes, tools and contacts.›
Approved auction housesThe directory of auction houses approved by OIMAP and their due diligence obligations.›
Partner museumsThe network of partner museums: collection documentation, restitutions and joint programmes.›
OIMAP partnersThe Organization's partners: international organizations, museum institutions and private sector players.›