Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
Arbitration

Restitution decisions

A few anonymised TAO decisions on restitution: sacred objects, archaeological collections, manuscripts and cooperation solutions.

Updated : October 28, 2026· 3 min read

What the arbitrators decided

Red-Figure Stamnos (Mixing/Storage Vessel): Komos (Musicians and Revelers), Kleophon Painter (c. 435–425 BCE)
Red-Figure Stamnos (Mixing/Storage Vessel): Komos (Musicians and Revelers), Kleophon Painter (c. 435–425 BCE)

Restitution decisions show the diversity of possible solutions. Four anonymised cases, adapted to preserve confidentiality, illustrate the tribunal's method: establishing the facts, assessing the cultural link, proposing a balanced solution.

The sheets follow the same structure as those in the other sections: facts, question, outcome, lessons.

For the full texts and the list of decisions, see the decision database.

  • Decisions
  • Restitution
  • Cooperation

Restitution decisions in figures

58Decisions published
58%Amicable agreements
39%Transfers of ownership
17 monthsAverage duration

Source: Registry of the OIMAP Arbitral Tribunal.

Breakdown

Transfer of ownership39%
Loan or shared custody26%
Dismissal15%
Compensation20%

Outcomes of restitution disputes.

Case 1: a ritual mask

A ritual mask kept in a museum for a century was claimed by a community. The experts established its ceremonial use and the loss of its transmission after its departure. The museum acknowledged the value of the link. The tribunal endorsed an agreement: transfer of ownership to the community, with a ten-year loan to the museum for a partnership exhibition.

Lesson: a living cultural link justifies a transfer, but scientific and public access can be preserved through loans.

The Calumny of Apelles, Giorgio Ghisi (1560)
The Calumny of Apelles, Giorgio Ghisi (1560)
The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)
The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)
The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530)
The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530)

Case 2: an archaeological collection

A collection of ceramics from an old excavation was claimed by the State of origin. The holder relied on an export authorisation of the time. The tribunal found the removal regular but, given the scientific value of the whole, ordered the return of half the collection, the other half remaining on deposit for study.

Lesson: in the absence of unlawfulness, the tribunal prefers a solution of sharing to an outright refusal.

Cases 3 and 4: manuscript and acquired object

An ancient manuscript, acquired by a collector from a dealer, had been removed from a national library during a conflict. The tribunal ordered its restitution to the State, with compensation of the collector by the seller. Another case, concerning a sculpture acquired during an expedition, ended in a lasting partnership: co-ownership, rotation of exhibitions, digitisation.

Lesson: the solution must take account of good-faith acquisitions, while recognising the gravity of an unlawful removal.

Follow-up after the award

For restitutions, performing the award often requires meticulous logistics: packing, transport, insurance, conservation conditions, ceremonies. The Registry may appoint a coordinator in charge of follow-up, in liaison with the Protection department.

A report is submitted to the tribunal at the end of the process. The parties may agree on follow-up reports at regular intervals, notably for long-term loans.

Four outcomes

Four cases
CaseOutcomePrinciple
Ritual maskTransfer and loanLiving cultural link
Archaeological collectionSharingScientific value
ManuscriptRestitution and compensationUnlawful removal
SculptureCo-ownershipNegotiated solution

Milestones

  1. First decision

    Restitution.

  2. First long-term loan

    Innovation.

  3. Co-ownership

    Creative solution.

  4. 58 decisions

    Solid case law.

Cases, not rules

Black-Figure Neck-Amphora of Panathenaic Shape (Storage Vessel) (525–500 BCE)
Black-Figure Neck-Amphora of Panathenaic Shape (Storage Vessel) (525–500 BCE)
The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439)
Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439)

Immediate transfer or transition

Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840)

Immediate

Return without delay
  • Symbolic response
  • Simple
  • Risk for conservation

When the conditions are met.

Hittite Vessel with Four Scenes Molded and Carved in Relief (1400–1200 BCE)

Transitional

Loan, study, preparation
  • Secures the object
  • Prepares the welcome
  • Longer

When conservation conditions need strengthening.

Negotiating a restitution

  1. Document

    Link and history.

  2. Dialogue

    Mediation.

  3. Propose

    Creative solutions.

  4. Agree

    Compromise.

  5. Monitor

    Enforcement.

Lessons

A community representative

White-Ground Lekythos (Oil Vessel): Mourners at Tomb (c. 400s BCE, with modern painting)
« The day the mask came back, there was a ceremony. We had not only found an object again: we had found a memory again. »
Aminata Sow, community representative

Vocabulary of decisions

Transfer of ownership
Passing of ownership to a new holder.
Study deposit
Temporary conservation for research.
Digitisation
Creation of a digital copy.
Collective memory
Shared memories of a community.

Frequently asked questions

Are the cases real?

They are adapted from real, anonymised decisions.

Can a loan be obtained?

Yes.

Who ensures enforcement?

The parties, followed by the Registry.

Where can I see enforcement?

Useful documents

Contacts

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)
Registry of the Arbitral Tribunal (TAO)Paris — Head Office+33 1 00 00 04 00greffe.tao@oimap.exampleMonday to Friday, 9 a.m. – 5 p.m.

See enforcement of awards

The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)

Having decisions applied.

Enforcement of awards
Image credits (16)
  • Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815) — Cleveland Museum of Art, CC0 1.0
  • Red-Figure Stamnos (Mixing/Storage Vessel): Komos (Musicians and Revelers), Kleophon Painter (c. 435–425 BCE) — Cleveland Museum of Art, CC0 1.0
  • The Calumny of Apelles, Giorgio Ghisi (1560) — 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 Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530) — Cleveland Museum of Art, CC0 1.0
  • Black-Figure Neck-Amphora of Panathenaic Shape (Storage Vessel) (525–500 BCE) — Cleveland Museum of Art, CC0 1.0
  • The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855) — 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
  • Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840) — Cleveland Museum of Art, CC0 1.0
  • Hittite Vessel with Four Scenes Molded and Carved in Relief (1400–1200 BCE) — Cleveland Museum of Art, CC0 1.0
  • White-Ground Lekythos (Oil Vessel): Mourners at Tomb (c. 400s BCE, with modern painting) — 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
  • Coronation of the Virgin, Christoffel Jegher (1632–36) — Cleveland Museum of Art, CC0 1.0
  • Seal Color Box (1662–1722) — Cleveland Museum of Art, CC0 1.0
  • Seal of Doge Michele Steno (reverse) (1400–1409) — Cleveland Museum of Art, CC0 1.0
  • The Dance at the Court of Herod, Israhel van Meckenem (c. 1500) — Cleveland Museum of Art, CC0 1.0
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