London's Old Master sales bolstered by private collections

The final evening sales of the year in London yielded reassuring results for the Old Masters market. 
Sothebys put on a modest-sized but successful sale that was anchored by works from four private collectionsthose of the Marquess of Lothian, the Forbes Collection, the Rutter Collection and the Von Lenbach Collection.
Italian paintings fared well on the night. From the Von Lembach collection, a 15th-century Sienese gold-ground work, Flagellation (1441), by the Master of the Osservanza, cli