 In 1409–1411 he executed the colossal seated figure of "Saint John the Evangelist", which until 1588 occupied a niche of the old cathedral façade, and is now placed in the Museo dell'Opera del Duomo.This work marks a decisive step forward from late Gothic Mannerism in the search for naturalism and the rendering of human feelings.The face, the shoulders and the bust are still idealized, while the hands and the fold of cloth over the legs are more realistic.