Polyptych of Valle Romita (detail)

In the central panel, the Virgin is shown being crowned by Christ, in the presence of God the Father and the Holy Ghost. The refined and delicate composition is made up of the three weightless figures - which seem to be disembodied in their draperies - and insubstantial elements, such as the radiant and flaming nimbus that supports the apparition of the Trinity. Curved forms - including the band of angel musicians, the contours of the figures of Christ and the Virgin, and the crowd of seraphim around God the Father - echo the arched shape of the panel.