England in particular had traded large amounts of money with the Satsuma Domain since the end of Edo period, and Parkes was cautious about the possibility that if the counterfeit money paid during this time was to become invalid, English merchants and businesses would suffer losses, and Japanese trade would fall into great confusion.
特にイギリスは幕末以来薩摩藩と多額の取引を行っており、その際に支払われた贋金が無効と言う事になれば、イギリスの商人や企業が打撃を受け、日本の貿易は大混乱に陥る事を警戒したのである。