Over the years there has been a major change in the way countries have sought to reclaim archaeological material that had been looted. Claims have been made against the background of the 1970 UNESCO Convention on the Means of Prohibiting and Preventing the Illicit Import, Export and Transfer of Ownership of Cultural Property. This was accepted by the USA in 1984 and by the United Kingdom in 2002. 

Attempts to reclaim material were extended and tended to take time to go through the legal channels. Such disputes included the Kanakaria Mosaics to Cyprus, the Dekadrachm Hoard and the Lydian Treasure to Turkey, and the Aidonia Treasure to Greece. The case of the Sevso Treasure is unresolved as although it was certainly removed from its archaeological context by unscientific means, it has not been possible to confirm where this hoard was found. 

The seizure of the Medici Dossier in the Geneva Freeport (and related photographic archives in Basel and in Greece) has allowed the Italian authorities to adopt a different strategy. Images of objects in a fragmented state or still covered in mud have been an emotive force in the rhetoric surrounding the returns. Museums that were reluctant to negotiate were persuaded that bad publicity could be avoided if discussions about returns were initiated. In one case a major North American museum was shown images in 2005 and less than a year later had arranged to return 13 antiquities to Italy. It was, and is, hard to argue that something was in “an old collection” when the object had been recorded in a distressed state subsequent to the 1970 UNESCO Convention. 

Yet compliance has been reluctant in some quarters. Boston’s Museum of Fine Arts was aware nearly twenty years ago that the torso of a Weary Herakles fit the abdomen and legs of a statue that had been excavated at Perge in southern Turkey. The presentation of a collection history that suggested that the torso had surfaced in Germany in the 1950s was a distraction. The situation was made more complicated as the donors had retained part ownership of the torso. Full title was eventually transferred to the MFA.

"Bonhams withdraws Roman sculptures with 'Medici link' from auction" Polaroid from the Medici Dossier and Bonhams Copyright [for the composition] David Gill.

David W. J. Gill and Christos Tsirogiannis have written on "Polaroids from the Medici Dossier: Continued Sightings on the Market" for the fifth issue of The Journal of Art Crime (Spring 2011) which can be purchased through subscription through ARCA's website or individually through Amazon.com. This is the abstract for the article:

The series of returned antiquities to Italy have been a reminder of the role of Giacomo Medici in the movement of antiquities to North American public and private collections. A dossier of images was seized during a series of raids on premises in the Geneva Freeport linked to Medici. Such images have made it possible for the Italian authorities to make identifications with recently surfaced antiquities. In spite of the publicity some involved with the trade of antiquities continue to offer recently-surfaced objects that can be traced back to Medici and his consignments to the London market.

David Gill is Reader in Mediterranean Archaeology at Swansea University, Wales, UK. He is a former Rome Scholar at the British School at Rome and was a member of the Department of Antiquities at the Fitzwilliam Museum, University of Cambridge. He has published widely on archaeological ethics with Christopher Chippindale. He is currently completing a history of British archaeological work in Greece prior to the First World War.

Christos Tsirogiannis is a postgraduate research student at Hughes Hall, University of Cambridge. His PhD research, supervised by Christopher Chippindale and David Gill, is on the international implications of the Robin Symes-Christos Michaelides photographic archive. He has excavated in Attica, the Cyclades and on Ithaka. He was seconded by the Hellenic Ministry of Culture to the Ministry of Justice to research illicit antiquities. He was involved with the return of antiquities from the J. Paul Getty Museum to Greece.