Pictures posted on social media showed a series of gold sovereigns bearing Isil inscriptions, and with a reported value of one gold dinar being with $139 (£89).
An anti-Isil activist by the name of Abu Ibrahim Raqqawi, who lives in the Isil controlled city of Raqqa in Syria, posted photographs of the coins on his Twitter account, saying they were due to come into circulation soon. Pictures were also posted on pro-Isil social media accounts.
Isil announced last November that it would start producing their own currency in areas under its control, in an effort to “emancipate itself from the satanic global economic system”.
The currency, based on the original dinar coins used during the Caliphate of Uthman in 634 CE, was set to include seven minted coins: two gold, three silver and two copper.
Designs due to be embossed on the gold coins included a symbol of seven wheat stalks – a Quranic reference – and a world map.
The prototype design had also shown that the coins would carry an Arabic message on the lines of “The Islamic State – A caliphate based on the doctrine of the Prophet”.