As an example, in the nineteenth century, many of European countries adopted the bimetallism, but there was wide gap of legal exchange ratio between gold and silver because silver production increased and its market value declined.
一例として19世紀、ヨーロッパ諸国の多くも金銀複本位制を採っていたが、銀産出高の増加などにより銀の市場価格が下落、金貨との法定金銀比価との間に開きができた。