\paperw19995 \margr0\margl0 \plain \fs20 \ri15195 \f1 This work, which is a rare case of a medieval picture that was signed by the artists who executed it, is one of the oldest e
xamples of panel painting in Italy. The didactic function of medieval art is evident in the succession of episodes that illustrate several episodes from the lives of the saints in addition to the \i Last Judgment\i0 .