This article needs additional citations for verification. (April 2021)
In 1530, the Maltese Islands (Malta and Gozo) were donated to the Order of Saint John by Emperor Charles V. Following the Siege of Malta of 1565, during the reign of Grandmaster Jean de Valette, a new fortified city, Valletta, had to be built. Due to the financial impact of the siege, in order to afford the labour of the several thousand people employed, the Maltese pataca was minted as fiduciary copper coins. The coins were inscripted with the words "Not money, but trust" (Latin: Non aes sed fides).
- Carothers, Neil (1930). Fractional Money: A History of the Small Coins and Fractional Paper Currency of the United States. John Wiley & Sons, Inc. apud Sant, Michael A. (1983). "Gold and Silver Coinage in Malta, 1530–1798: The Order's stand against falsification of money" (PDF). Hyphen. 3 (6).
- "The Coinage of Malta". Central Bank of Malta. Archived from the original on 2011-08-07. Retrieved 2021-04-19.
- "Timeline Coins". Central Bank of Malta. Retrieved 2021-04-19.