noun
mint parity; mint par of exchange
A historical financial term referring to the official exchange rate between two currencies based on their gold or silver content. Rare in modern usage outside of economic history contexts.
金本位制の下では、法定平価が通貨間の交換比率の基準となった。
Under the gold standard, mint parity served as the basis for exchange rates between currencies.
平価 is a broader term for 'par value' or 'parity', while 法定平価 specifically refers to the legally defined mint parity.
Compound of 法定 (legal, statutory) and 平価 (par value, parity). The term is a direct translation of the English 'mint parity' and was used in the context of the gold standard.