Fiat Money Inflation in France by Andrew Dickson White (pg. 49)

It will be readily seen that it was fully time to put an end to the system, for the gold “louis” of twenty-five francs in specie had, in February, 1796, as we have seen, become worth 7,200 francs, and, at the latest quotation of all, no less than 15,000 francs in paper money–that is, one franc in gold was nominally worth 600 francs in paper.