Gresham's law
The new card money and the "ordonnances de paiement" were initially successful. However, the gradual deterioration of the finances of the French government over the first half of the 18th century and the expenses of the Seven Years' War with Britain triggered a rapid increase in the amount of paper money in circulation in the 1750s. That in turn meant that inflation became a problem, as noted by Governor Montcalm in a dispatch to the French government. The declining confidence in the paper money meant coinage was increasingly hoarded, an application of Gresham's law. The paper money issued by the colonial government continued to depreciate, especially once the French government suspended redemption of the card money until after the end of the war with Britain.