The Papal States scudo was the coinage system used in the Papal States until 1866. Between 1798 and 1799, the revolutionary French forces established the Roman Republic, which issued coins denominated in baiocco and scudo. In addition, the states of Ancona, Civitavecchia, Clitunno, Foligno, Gubbio, Pergola and Perugia changed their coinage system to that of the Roman Republic.