Playing cards were used as currency in early Canada. In 1685 the intendant of the French garrison in Quebec found that he had no money to pay his troops, “and not knowing to what saint to make my vows, the idea occurred to me of putting in circulation notes made of cards, each cut into four pieces; and I have issued an ordinance commanding the inhabitants to receive them in payment.”
This worked surprisingly well, so when funds ran short the following year they tried it again. The system continued intermittently for 70 years, collapsing finally only with the chaos of the Seven Years’ War.