When I worked for Christie’s Auction House, I was always fascinated when something came through that turned out to be a forgery. I was a photographer for the company, so I worked with a lot of experts in each department, and I tried to learn a bit about how they were able to tell a forgery from the real deal. I never gained a sophisticated enough eye to recognize a forgery, but it was all still interesting to me.
If the subject of art forgery at all interests you, I recommend the movie Who the #$&% is Jackson Pollock? (It was streaming on Netflix, but appears not to be anymore.)
ROCHEFORT TELLS HOW AMERICANS BUY ART FAKES: We Are the Preferred Victims of the Dealers in “Old Master,” He Says — Why, of “Rembrandts” Alone There Are 2,500 in the United States. (PDF)
From September 24, 1911