In June 1865, the rates of the coins were regulated so as to give them the following premium: one Tetsu ichimonsen coin was worth 12 mon of Kanei-tsuho shinchu shimonsen coin or 8 mon of Bunkyu-eiho coin.
慶応元年（1865年）閏5月には鉄一文銭に対し、寛永通寳真鍮四文銭は12文、文久永寳は8文の増歩通用となった。