PREVIEW: In March we exhibited at The European Fine Art Fair in Maastricht for the twenty-first consecutive year, and as this remarkable event celebrated its own twenty-fifth birthday, we were encouraged to look back to the early years and draw comparisons with the present. As far as we are concerned, the only significant change is the conspicuous scarcity of fine quality Old Master paintings at the fair today which are new to the market, compared with what was on offer there two decades ago...