The Directory, of the Republic of France, orders the repeal of the legal tender statutes, and a “free float” between lawful Money (gold and silver Coin) and the paper Assignat (a Bill of Credit) which had been trading on the black market at the rate of 50:1.
[added 10/30/2021]
Subsequent Events:
References:
Assignats—Fiat Money Inflation in France
oll.libertyfund.org/titles/white-fiat-money-inflation-in-france