This is a copper Scheidemünze (subsidiary coin) issued by the Duchy of Nassau (Herzogthum Nassau) during the reign of Duke Adolph. The obverse features the crowned coat of arms of the Duchy, while the reverse displays the denomination "1 KREUZER" and the date "1860" surrounded by an oak wreath.
The term Herzogthum Nassau refers to the Duchy of Nassau, a historical state in western Germany that existed from 1806 to 1866 before being absorbed into the Kingdom of Prussia.
