This was assumed the paper money was issued as currency of gold or sen unit as well as many clans in western Japan did after Meiji new government stopped the circulation of silver currency.
これは、多くの西日本諸藩などと同様に、明治新政府により銀貨幣の通用が停止されたのちに金・銭単位通貨として発行された紙幣と推測される。