[pvg]

There was no shortage of outright stealing but it doesn't seem to be the case here. For one thing, it likely wasn't seen (other than by specialists) as a cultural artifact of quite the importance we give it today. The accounts of its discovery and early work done on it don't say anything about theft (including the Indian ones I can find). The fact it was found in what is today Pakistan probably means nobody on any side wants to as much as think about the can of worms any discussion about repatriation would be.