| Zeniza was established in Shinden of Fukagawa-Senden (Koto Ward) in Edo in 1768 under the supervision of ginza (an organization in charge of casting and appraising of silver during the Edo period), and the minting of four-mon coin started there. |
明和5年（1768年）に江戸深川千田 (江東区)新田に銀座 (歴史)監督の下銭座が設けられ、四文銭が鋳造された。 |