Time Running Out for No-Questions-Asked Collecting?

Curtis Dowling of Treasure Detectives:

I’d say about 30 to 40 per cent of the items floating around on the international art market are fakes. It’s a really big problem.

(Interview by Amy Rose Dawson, Metro, 28 Aug 2013)so, obviously in this market too, it's important to know where the object was in the past and how it entered the market.