 In 1411–1413, Donatello worked on a statue of "St. Mark" for the guild church of Orsanmichele.In 1417 he completed the "Saint George" for the Confraternity of the Cuirass-makers.The elegant "St. George and the Dragon" relief on the statue's base, executed in schiacciato (a very low bas-relief) is one of the first examples of one-point perspective in sculpture.