The Coronation, despite certain inconsistencies, is a visual treat, since a recent cleaning has unveiled a wealth of vigorous although unnaturalistic colour. Here is a beatified world without conflict or blemish; the participants are untroubled, heavenly creatures undisturbed by self-doubts. Lippi's handsome figures, constructed sumptuously and optimistically, are much like their sculptured counterparts by Luca della Robbia, a temperamentally similar artist to whom Filippo Lippi owes a debt.