Chogin, whose value was determined by its actual weight in ryome (a weighted value) using a balanced scale, was the currency unit for Ginme (silver grain) trade, and it was referred to as "Silver X kan" (1 kan=3.75 kg) or "Silver X monme" (1 monme=3.75 g).
額面は天秤による量目の実測値で、商取引において銀何貫、銀何匁と表記される銀目取引の通貨単位であった。