fiduciary currency
fiat currency

Finally, it is important to say from now on that the conversion of national fiduciary currency into euros after 1 January 2002 should take place at no cost to users.

Although Roman coinage had long been fiat money or fiduciary currency, general economic anxieties came to a head under Aurelian, and bankers lost confidence in coins legitimately issued by the central government.

In 1993, Pierre Delval moved to a different environment once again, this time developing a piece of private international engineering dedicated to the protection of fiduciary currencies and identity documents against forgeries affecting the State or involving organised crime.

The bronze coinage was initially a fiduciary currency rather than a token currency, based on the "libral standard" where the as weighed one Roman pound (libra) with fractions in units of Roman ounces (unciae), with 12 unciae in a libra.