Ducato Público Deposited
A coin struck in both gold and silver for several parts of Italy but especially for Naples and the two Sicilies. In order to indicate the complicated relationship of these coins to their multiples and divisions the following table is appended: Ducato d'Oro = 10 Neapolitan Carlini; Ducato d'Argento = 100 Grani; the half of the silver Ducato, of the value of 50 Grani, being also known as the Pataca.
Following the ordinance of April 20, 1818, there were issued the Oncetta, a gold coin of three Ducati, with double, quintuple, and ten Oncetta pieces, and the Ducato d'Argento, of ten Carlini or 100 Grani.
In Sicily the divisions of the Ducato, prior to 1818, has only half the value of those in Naples, i.e.--
The silver Ducato of Ragusa, struck only in the year 1722 and 1723, had a value of forty Grossetti. See Vislino.
- Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)