A coin which was considered to be minted in Kameido at this time was called Maruya-sen or Mimishiro-sen, and it is said that coins equivalent to 500 thousand kanmon (500 million coins) were minted.
このとき亀戸で鋳造されたとされるものが丸屋銭（まるやせん）、あるいは耳白銭（みみしろせん）であり、50万貫文（5億枚）が鋳造されたとされる。