Charles Felix of Savoy was born in 1765 in Turin, the capital of the Kingdom of Sard-Piedmont. His father was King Victor Amade III and his mother, Maria Antonietta from the House of Bourbon, was a Spanish infant. Of their 12 unborn children, only nine reached adulthood. The first heir to the throne of the House of Savoy, Prince Charles Emanuel, ascended the throne in 1796, after the death of his father, under the name Victor Emanuel I. In 1815, the Congress of Vienna designated the Republic of Genoa as a duchy, and Charles Felix was appointed as the head of it as Duke of Genoa. In 1821, his brother, King Viktor Emanuel, was forced to abdicate. From then on, Charles Felix, until his death in 1831, bore the royal title of Sard-Piedmont. During his reign, he had autocratic power and introduced a strict absolutist government system. With his death in 1831, the male branch of the House of Savoy was interrupted. Since the order of inheritance was determined by the collection of laws of the Franks, the law of Saly, the royal title passed to the regent, Prince Charles Albert.

King Károly Félix of Szárd-Piedmont ascended the throne in 1821 and ruled until 1831. During his reign, the coinage of the Italian States continued to be based on traditional coins and talliers. The coins and thalers were made of silver and gold and depicted the portrait of the king. After the 1821 revolution, Károly Félix abolished the previous constitution and introduced an absolute monarchy. This also affected the coinage, as the new king wanted to see his own image on the coins. Therefore, coins and thalers minted before the revolution of 1821 were used by the former kings, Viktor Emanuel of Savoy and II. The portrait of Viktor Emánuel was depicted, while the portrait of Károly Félix can be seen on the coins and thalers minted after 1821. During the reign of Károly Félix, the following coins and thalers were minted in Italy: silver 1-lire, silver t-2-lire, silver 5-lire, silver 10- lira, silver 20-lira, silver 50-lira, gold 10-ducatos, gold 20-ducatos and gold 50-ducatos. In addition, coins of smaller value were minted, such as 1, 2 and 5 cent silver coins, as well as 1, 2 and 5-cent copper coins. During the reign of Károly Félix, the coinage of the Italian States continued to take place in a traditional form. The coins were made of silver and gold and depicted the portrait of the king.