| Since 1636, bakufu had made zeni-za (an organization in charge of minting coins during the Edo period) across the country cast Eiraku-tsuho (bronze coins struck in the Ming dynasty), whose value was set the same as Bitasen (low quality coins whose surfaces were worn away), though it was good quality coin. |
寛永13年（1636年）より幕府は各地銭座に寛永通寳の鋳造を請負わせたが、これは良質の銭貨であったにも拘らず、価値は鐚銭と等価に設定されたのであった。 |