In Edo period, kan and momen were mainly used to express the weight such as silver by what monme (silver by what kan), which was called ginmoku, and since silver coins were used by weight standard as a currency of merchant, trading was conducted mainly by silver.
江戸時代に入ると貫、匁の表記が主流となり、銀何匁（銀何貫）と表記されこれを銀目と称し、また秤量銀貨は商人の通貨であったことから、商品取引相場の多くは銀建であった。