In 1612, the personal library of Sultan Zaydan An-Nasser of Morocco was trusted to French consul Jean Phillipe de Castellane for transportation. After Castellane waited for six days not receiving his pay, he sailed away. A flotilla commanded by Spanish privateer Luis Fajardo de Córdoba captured the ship and took it to Lisbon (then part of the Spanish Empire). In 1614, the Zaydani Library was transmitted to El Escorial. Moroccan diplomats have since asked for the manuscripts to be returned. Some other Arabic manuscripts have been delivered by Spain, but not the Zaydani collection. In 2013, the Spanish Cultural Heritage Institute presented microfilm copies of the manuscripts to Moroccan authorities.
The 1978 UNESCO Convention strengthened existing provisions; the Intergovernmental Committee for Promoting the Return of Cultural Property to its Countries of Origin or its Restitution in case of illicit Appropriation was established. It consists of 22 members elected by the General Conference of UNESCO to facilitate bilateral negotiations for the restitution of "any cultural property which has a fundamental significance from the point of view of the spiritual values and cultural heritage of the people of a Member State or Associate Member of UNESCO and which has been lost as a result of colonial or foreign occupation or as a result of illicit appropriation". It was also created to "encourage the necessary research and studies for the establishment of coherent programmes for the constitution of representative collections in countries whose cultural heritage has been dispersed".
Today the Euphronios krater sits rather forlornly in a glass case in the National Etruscan Museum in Rome’s Villa Borghese park. Wall labels, written in Italian and poorly translated English, explain where it was found. One example: “The tomb of Greek Vases (Tomba dei Vasi Greci) is the latest within the great tumulus II of the Banditaccia necropolis and contained so many grave goods that only part of them could be displayed.”