LONDON Props, costumes and other items from the hit TV series " Downton Abbey " sold for 1.7 million pounds ($2.3 million) at a London auction, six times the pre-sale estimate, Bonhams revealed Tuesday. The "bell wall," the servant's call system that appears from the first series to the last, proved to be the prize item, selling for an eye-watering 216,300 pounds against an estimate of 7,000 pounds. The Bonhams sale, which featured everything from dresses to a car and a clapper board, ran