In the international art calendar few fairs can boast such high quality works across so many diverse categories as TEFAF in Maastricht this week (18-27th March). The opportunity to see works of art of the highest quality is almost unmatched. Such is the fair's attraction to the billionaire collector there are no longer any slots left for private planes at Maastricht's airport.

Like the opening days of the Venice biennale, TEFAF is the one of those places one can rub shoulders with...