Following the Renaissance, the increasing prosperity of the middle class created a fierce demand for art. Near the end of the 14th century, Roman statues were unearthed in Italy, intensifying the populace's interest in antiquities, and leading to a sharp increase in the value of these objects. This upsurge soon extended to contemporary and recently deceased artists. Art had become a commercial commodity, and the monetary value of the artwork came to depend on the identity of the artist. To identify their works, painters began to mark them. These marks later evolved into signatures. As the demand for certain artwork began to exceed the supply, fraudulent marks and signatures began to appear on the open market.
Art fraud, the deliberately false representation of the artist, age, origins, or ownership of a work of art in order to reap financial gain. Forgery of a famous artist’s work is the best-known kind of art fraud, but fraud may also result from the knowing misattribution of the age or origin of a work of art—if, for example, an art dealer were to falsely assert that a statue was from 5th-century-bce Greece or that a vase was from the Chinese Ming dynasty, for the purpose of making a greater profit, because works from those particular regions or time periods are deemed more valuable on the contemporary art market. Art theft for resale is also a form of art fraud.