The Theory of Money and Credit - Ludwig von Mises [25]
There is no such thing as an economic concept of token coinage. All that economics can distinguish is a particular subgroup within the group of claims to money that are employed as substitutes for money, the members of this subgroup being intended for use in transactions where the amounts involved are small. The fact that the issue and circulation of token coins are subjected to special legal rules and regulations is to be explained by the special nature of the purpose that they serve. The general recognition of the right of the holder of a banknote to receive money in exchange for it while the conversion of token coins is in many countries left to administrative discretion is a result of the different lines of development that notes and token coinage have followed respectively. Token coins have arisen from the need for facilitating the exchange of small quantities of goods of little value. The historical details of their development have not yet been brought to light and, almost without exception, all that has been written on the subject is of purely numismatical or metrological importance. [5] Nevertheless, one thing can safely be asserted: token coinage is always the result of attempts to remedy deficiencies in the existing monetary system. It is those technical difficulties, that hinder the subdivision of the monetary unit into small coins, that have led, after all sorts of unsuccessful attempts, to the solution of the problem that we adopt nowadays. In many countries, while this development has been going on, a kind of fiat money[6] has sometimes been used in small transactions, with the very inconvenient consequence of having two independent kinds of money performing side by side the function of a common medium of exchange. To avoid the inconveniences of such a situation the small coins were brought into a fixed legal ratio with those used in larger transactions and the necessary precautions were taken to prevent the quantity of small coins from exceeding the requirements of commerce. The most important means to this end has always been the restriction of the quantity minted to that which seems likely to be needed for making small payments, whether this is fixed by law or strictly adhered to without such compulsion. Along with this has gone the limitation of legal tender in private dealings to a certain relatively small amount. The danger that these regulations would prove inadequate has never seemed very great, and consequently legislative provision for conversion of the token coins has been either entirely neglected or left incomplete by omission of a clear statement of the holder's right to change them for money. But everywhere nowadays those token coins that are rejected from circulation are accepted without demur by the state, or some other body such as the central bank, and thus their nature as claims to money is established. Where this policy has been discontinued for a time and the attempt made by suspending effectual conversion of the token coins to force more of them into circulation than was required, they have become credit money, or even commodity money. Then they have no longer been regarded as claims to money, payable on demand, and therefore equivalent to money, but have been valued independently.
The banknote has followed quite a different line of development. It has always been regarded as a claim, even from the juristic point of view. The fact has never been lost sight of that if its value was to be kept equal to that of money, steps would have to be taken to ensure its permanent convertibility into money. That a cessation of cash payments would alter the economic character of banknotes could hardly escape notice; in the case of the quantitatively less important coins used in small transactions it could more easily be forgotten. Furthermore, the smaller quantitative importance of token coins means that it is possible to maintain their permanent