Currency money or book money, which are fiat money. Currency money Currency money is money in full circulation that takes its value from the precious metal it contains, that is, its market value is (almost) the value of the metal it contains (apart from the Seigniorage or the minters' profit), though this is always overcompensated for in coins and banknotes from a country undergoing debasement. Currency money is usually made of silver or gold, but in very rare cases plated metal and even copper may be used. Currency money is commodity money, as opposed to coins whose metal value is less than
Financial accounting of measure in accounting shall be the base money unit of the most relevant currency. This principle also assumes the unit of measure is stable; that is, changes in its general purchasing power are not considered sufficiently important to require adjustments to the basic financial statements.” Historical Cost Accounting, i.e., financial capital maintenance in nominal monetary units, is based on the stable measuring unit assumption under which accountants simply assume that money, the monetary unit of measure, is perfectly stable in real value for the purpose of measuring (1) monetary items not inflation-indexed daily in terms of the Daily CPI