4 Ducati - Carlo I

Carlo I of Naples was, of course, Carlos III of Spain — he abandoned the Neapolitan throne in 1759 when he inherited the Spanish crown, ending a reign that had genuinely transformed the kingdom's finances and coinage. This 4-ducati denomination was part of a broader monetary reorganization he undertook after taking Naples in 1734, displacing Austrian Habsburgs who had held the kingdom since 1707.

The Neapolitan ducat at this period was reckoned at 10 carlini, and the gold issues circulated alongside a complex billon and silver system that Carlo never fully rationalized before his departure for Madrid.