We empirically analyze the illicit trade in cultural property and antiques, taking advantage of different reporting incentives between source and destination countries. We thus generate a measure of illicit trafficking in these goods based on the difference between imports recorded in United States' customs data and the (purportedly identical) trade as recorded by customs authorities in exporting countries. We find that this reporting gap is highly correlated with the corruption level of the exporting country as measured by commonly used survey-based indicies, and that this correlation is stronger for artifact-rich countries. As a placebo test, we do not observe any such pattern for U.S. imports of toys from these same exporters. We report similar results for four other Western country markets. Our analysis provides a useful framework for studying trade in illicit goods. Further, our results provide empirical confirmation that survey-based corruption indicies are informative, as they are correlated with an objective measure of illicit activity.

But at-least for Indian antiquities, the 1969/70 cut-off is no holy grail. There are other legal provisions for ensuring the return of smuggled artifacts. These include the Antiquities and Art Treasures Act, 1972 which can be read in addition to Ancient Monuments Preservation Act, 1904, the Ancient Monuments and Archaeological Sites and Remains Act, 1958 or even the Indian Treasure Trove Act of 1878.
In addition to this, the Consulate showed the team 327 objects, out of which 251 were found to be historically important antiques. This also contained the 56 terracotta objects returned by the Toledo Museum (Ohio) which was originally gifted to them by Subhash Kapoor. A majority of the terracotta belonged to Chandraketugarh, West Bengal, a prominent site of terracotta art in the first decade, CE. The rest comprised terracotta objects of Harappan culture and of the Gupta period.
Bonhams and Christie’s were also forced to pull smaller objects from their March sales this year, after they were alleged to have passed through the hands of two notorious antiquities smugglers, Giacomo Medici and Gianfranco Becchina. Both had been convicted of trafficking in looted objects, for which Medici was sentenced to 10 years in prison and paid a 10m euro fine – the largest ever imposed for such a crime by Italian prosecutors. Polaroid photos of an immense cache of objects in his Swiss warehouse apparently identified a second or first century BC jug offered for £4,000-£6,000 ($6,700-$10,000) at Christie’s, and a third century pottery pyxis (cosmetic pot) offered for £3,000-£5,000 ($5,000-$8,400) at Bonhams. Earlier this year, the US government seized a $4m (£2.4m) ancient Roman statue in a New York warehouse – it too had passed through Becchina’s hands.