Nevertheless, a forgery may pretend to be no more than a copy of a genuine original. It then becomes necessary to examine the language and style in which it is written and to look for anachronisms or for statements that conflict with known authorities. This is the method of textual criticism brilliantly employed by Richard Bentley in his Dissertation upon the Epistles of Phalaris (1699), which proved that these letters, far from being written by Phalaris (a Sicilian tyrant of the 6th century bc), were in fact the work of a Greek sophist of the 2nd century ad.
Speaking on the sidelines of the Art Business Conference, Pierre Valentin, head of the art law practice at London law firm Constantine Cannon, said laundering illicit funds through the art market was seductive because purchases at auctions "can be anonymous and it's a moveable asset. You can put the art on a private plane and take it anywhere. Plus there is no registration system for art."
The notion of intellectual property—the idea that artists’ works belong to them—dates at least to medieval Europe, though history records examples of the concept as early as ancient Greece. It had taken hold sufficiently during the Renaissance for Michelangelo to take umbrage when his work was misattributed. It was reported that when he discovered that another artist was receiving credit for sculpting the famous Pietà (now in St. Peter’s Basilica in Rome), Michelangelo returned with his chisel and added his signature across the centre of the sculpture, on the prominent sash across Mary’s upper body (in Italian): “Michelangelo Buonarroti, Florentine, made this.”