1 Franc KM#55 4.00 g., Copper-Nickel, 21 mm. Ruler: Jean Obv: Portrait to the left of Jean (1921-), Grand Duke of Luxembourg from 1964 to 2000 surrounded by the legend and the signature of the engravers. Rev: Face value surrounded by a stylized laurel wreath, surmounted by a royal crown, below the mint year Edge: Reeded