French franc
The franc (/fræŋk/; [fʁɑ̃]; sign: F, commonly also FF or Fr) was a currency of France. Between 1360 and 1641, it was the name of coins worth 1 livre tournois and it remained in common parlance as a te...
French franc - Wikipedia
Reserve currency
A reserve currency (or anchor currency) is a currency that is held in significant quantities by governments and institutions as part of their foreign exchange reserves. The reserve currency is common...