Even during recession times, the art business is still an attractive one and although it may receed during worst economic times, soon picks up and new auction records are often broken, just as it happened in 2009 and is happening in 2010.
With this constant demand, art forgers know well about market preferences and have always resorted to available knowledge, techniques and talent to counterfeit the works of famous artists.
Some counterfeits are so good that only recently with new technology they were found out as so.
However some works thought of being from famous old masters, are copies made by their disciples, not with the intent of counterfeiting but as a common training practice, although of course that could happen.
The College Crunch features an interesting article with some useful links to probably the 11 Most Famous Fakes in Art History, including "Christ and the Disciples at Emmaus" attributed to Vermeer; "Kouros" acquired by the Getty Museum, still in exhibition and labeled "Greek, about 530 B.C., or modern forgery"; "Portrait of Alexander Mornauer" attributted to Hans Holbein and other works from famous masters.
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