As recommended by Giotto, Andrea Pisano was awarded the commission to design the first set of doors in 1329. The south doors were originally installed on the east side, facing the Duomo, and were transferred to their present location in 1452. The bronze-casting and gilding was done by the Venetian Leonardo d'Avanzo, widely recognized as one of the best bronze smiths in Europe. This took six years, the doors being completed in 1336. These proto-Renaissance doors consist of 28 quatrefoil panels, with the twenty top panels depicting scenes from the life of St. John the Baptist. The eight lower panels depict the eight virtues of hope, faith, charity, humility, fortitude, temperance, justice and prudence. The moulded reliefs in the doorcase were added by Lorenzo Ghiberti in 1452. There is a Latin inscription on top of the door: "Andreas Ugolini Nini de Pisis me fecit A.D. MCCCXXX" (Andrea Pisano made me in 1330).