Wadōkaichin
- 和同开珎（唐开元年间，日本铜钱“和同开珎”流入中国，是最早的方孔圆钱。币面为“和同开珎”四字，仿唐开元通宝而铸。此钱随着中日贸易的发展传入中国。曾铸和同开珎银钱，不久即废，铸额极少）
Wadōkaichin
-
abstract:
, also romanized as Wadō-kaichin or called Wadō-kaihō, is the oldest official Japanese coinage, having been minted starting in 708 AD on order of Empress Gemmei..Brown, Delmer et al.
以上来源于:
WordNet