The latter five, probably looted from unauthorized digs in central Italy, were part of a contested group of artefacts that passed through the hands of the Italian antiquities dealer Giacomo Medici.
Two of the four pots passed through Sotheby's in the mid-1980s. And it is now well documented that these sales contained indirect consignments from Medici that had passed through Switzerland.
This episode is beginning to suggest that Eisenberg's objects are featured in the Polaroids seized in Geneva. Such evidence is clearly behind the returns of antiquities from North American museums.
What else will be identified?