also: わどうかいほう
noun
Wadōkaichin; Japan's first circulated coinage
Historical term for the first widely circulated coin in Japan, minted in 708 CE. Often mentioned alongside 和同開珎 and 富本銭.
Wadōkaichin is considered Japan's oldest circulated coinage, minted in 708.
歴史の授業で和同開珎と富本銭の違いを学んだ。
In history class, we learned the difference between Wadōkaichin and Fuhonsen.