There are still many questions regarding the relationship between Fuhonsen coin and Wado-kaichin, the value as currency, region of distribution, the function, and so on, which merit further research.
富本銭と和同開珎との関係、貨幣としての価値、流通範囲、機能などはまだ不明な点が多く、今後の研究課題である。