Van Meegeren felt that his genius had been misjudged, and he set out to prove to the art critics that he could more than "copy" the Dutch Masters; he would produce a work so magnificent that it would rival theirs. He moved with Jo to the South of France and began preparations for this ultimate forgery, which took him from 1932 to 1937. In a series of early exercises, he forged works by Frans Hals, Pieter de Hooch, Gerard ter Borch, and Johannes Vermeer. Finally, he chose to forge a painting by Vermeer as his masterpiece. Vermeer had not been particularly well known until the beginning of the twentieth century; his works were both extremely valuable and scarce, as only about 35 had survived.