A large quantity of Fuhonsen coins were discovered in Asuka-mura, Nara Prefecture in January 19, 1999; therefore, the reports, the established theory that Wado-kaichin was the oldest coin would be overturned and textbooks would be rewritten, came out.
1999年1月19日には、奈良県明日香村から大量の富本銭が発見され、最古の貨幣は和同開珎という定説が覆る、教科書が書き換えられるなどと大きく報道された。