One of the popular fallacies in connection with commerce is that in modern days a money-saving device has been introduced called credit and that, before this device was known, all purchases were paid for in cash, in other words in coins. A careful investigation shows that the precise reverse is true. In olden days coins played a far smaller part in commerce than they do to-day. Indeed so small was the quantity of coins, that they did not even suffice for the needs of the [Medieval English] Royal household and estates which regularly used tokens of various kinds for the purpose of making small payments. So unimportant indeed was the coinage that sometimes Kings did not hesitate to call it all in for re-minting and re-issue and still commerce went on just the same.