In the East market during that time, however, foreign payment was generally done by silver coins; therefore, 1 yen silver coin (weighed value: 416 grain) and silver coins of weighed value of 420 grain equivalent to German silver were issued for trade, and used as means of foreign payment for trade.
しかし、当時は東洋市場においては銀貨による対外支払いが一般的であった為、1円銀貨（量目は416グレーン）ならびに、当時の洋銀に相当する420グレインの量目の貿易銀を発行し、貿易などの対外支払用貨幣として使用した。