Sothebys and Christies, two of the most influential auction houses in the world, are forecasting a reversal of fortune in the global art market after a prolonged downturn. Sothebys, headquartered
Sothebys and Christies, two of the most influential auction houses in the world, are forecasting a reversal of fortune in the global art market after a prolonged downturn. Sothebys, headquartered






