 The clock was inaugurated on February 1, 1497.Driven by weights, with a foliot escapement, the clock controlled both the bell-ringing shepherds on the tower, who would have rung the bell between 1 and 24 times to sound the Italian hours, and a carousel which showed the procession of the Magi, preceded by an angel blowing a trumpet.The dial was a concentric-ring astronomical clock similar to the clock of the Torre dell'Orologio, Padua of 1434, rather than the astrolabe type with offset zodiac dial, as found at Prague.