It used to be considered that the art market went in cycles. As sure as night follows day, seven years of plenty would be followed by seven years of famine; and it usually was in seven year cycles. In the week that saw Monet fetch massive sums, The Telegraph reveals why London's auction houses are in the middle of record-breaking sales.
Image: In May 06, an unnamed Russian collector paid $95 million for Picasso's Dora Maar au Chat.