HEN Master Drawings London was launched in 2001, the concept of dealers cooperating in putting on a festival of shows in their own galleries had only been tried before by the Asian art trade and still seemed a gamble. The first few years were a delight for collectors and connoisseurs, especially when there were week-end openings around Mayfair and St James’s, and gaggles of friendly rivals would walk from one Champagne stop to another—for some reason, the honey-roast sausages at the Maas Gallery remain happily in memory. Such was the venture’s success that Old Master and sculpture dealers soon followed with their own ‘weeks’. In time,
