Black chalk drawing by Raphael sells for 29.7m after sparking 17-minute bidding war at auction

Black chalk drawing by Raphael sells for 29.7m after sparking 17-minute bidding war at auctionRaphael drawing sells for record price as world's biggest art collectors fought to buy itThe piece was part of a collection at the Duke of Devonshire’s Chatsworth House It helped Raphael prepare to paint Transfiguration, a world-renowned work of art | UPDATED: 19:06 GMT, 6 December 2012 A drawing by Italian artist Raphael has fetched a record 29 million at auction – more than twice the original estimate. The black chalk piece, called Head Of A Young Apostle, became the most expensive work on paper after it sold for almost three times its estimated price at auction, auction house Sotheby’s said. It had been part of a collection at the Duke of Devonshire’s Chatsworth House stately home in Derbyshire since the 1700s