15 Ducati - Francesco I

Francesco I came to the throne of the Two Sicilies in 1825 following the death of his father Ferdinand I, who had spent much of his reign navigating Napoleonic occupation, forced constitutional concessions, and Austrian military intervention to crush the 1820–21 liberal revolt. Francesco inherited a kingdom still under heavy Austro-Hungarian influence, and his first coinage — this 15 Ducati among them — was struck in the same year of his accession, making it effectively a coronation-year issue.

The .996 fineness is exceptionally high for a 19th-century European gold issue, exceeding even contemporary British sovereigns.