Hayek's proposal of competitive supply of money strongly opposes the monetary tradition of liberalism, who rested on the alleged inhability of market mecha- nisms to ensure both the determination of the quantity of money and its equilibrium value. Nevertheless, the stability of a competitive monetary order is highly doubtful/, for it is based upon the possibility that banks could control secondary emissions, and discover through market procedures a stable standard of value. Moreover, the plurality of currencies seems very difficult to maintain through time. Thus the proposition that monetary competition would eliminate inflation and the subsequent fluctuations of investment and output, far from being proved, appears as a mere postulate. ...