Antiquities and Due Diligence: Business Models

The days of the no-questions-asked
market are numbered, it is
only a matter of time

German dealers can't do due diligence, they say. American dealers are looking with apprehension at the European proposals to clean up the market. One, in California says: 

The proposed new German law is so onerous that if Classical Coins were located in Germany, I would be forced to leave that country, or close my business.

Indeed, the vast majority of coins offered by that dealer appear on his website with no collecting history given, and no mention of the seller being able to supply responsible buyers any documentation indicating licit origins. Perhaps that is precisely the kind of 'business' that needs to be closed.