Keizersgracht 321 looks innocuous enough today, but this was once the home of the Dutch art forger Han van Meegeren (1889–1947). During the German occupation of World War II, Meegeren sold a “previously unknown” Vermeer to a German art dealer working for Herman Goering; what neither the agent nor Goering realized was that Meegeren had painted it himself. A forger par excellence, Meegeren had developed a sophisticated ageing technique in the early 1930s. He mixed his paints with phenol formaldehyde resin dissolved in benzene and then baked the finished painting in an oven for several hours; the end result fooled everyone, including the curators of the Rijksmuseum, who had bought another “Vermeer” from him in 1941. The forgeries may well have never been discovered but for a strange sequence of events. In May 1945 a British captain by the name of Harry Anderson discovered Meegeren’s “Vermeer” in Goering’s art collection. Meegeren was promptly arrested as a collaborator and, to get himself out of a pickle, he soon confessed to this and other forgeries, arguing that he had duped and defrauded the Nazis rather than helping them – though he had, of course, pocketed the money. It was a fine argument and his reward was a short prison sentence – but in the event he died before he was locked up.