DUCAT(n.)
A coin, either of gold or silver, of several countries in Europe; originally, one struck in the dominions of a duke.

Note: The gold ducat is generally of the value of nine shillings and four pence sterling, or somewhat more that two dollars. The silver ducat is of about half this value.
ETYMOLOGY = (French) ducat, (Italian) ducato, (Late Latin) ducatus, from dux leader or commander. See Duke.