A taskforce set up by Britain's 21 national museums to discover whether British collections contain artworks looted by the Nazis has been told one of Adolf Hitler's favourite drawings is in the British Museum. The 15th-century drawing, once thought the work of Albrecht Durer but now attributed to a student, has been identified by some experts as having been looted from the Polish city of Lvov. The charcoal drawing, The Rape of Europa, showing a woman being carried away by the god Zeus in the form of a bull, could become the centre of a complicated lawsuit. Martin Bailey, an expert on stolen art, says the work was presented to Hitler, who admired it so much he had it accompany him on visits to the front until it was hidden in an Austrian salt mine. After the war the work was sold into a private collection before ending up in the British Museum. Experts say at least 100,000 works of art worth GBP17 billion (HK$221 billion) stolen during the war are still missing. The taskforce will draw up guidelines to help trace works stolen during and before the war.