Country Belgium Denomination 5 francs Year 1971 Name Inscription in Dutch - 'BELGIE' Period King Baudouin I (1948 - 1993) Type of coinage Regular issue Ruler Leopold III / Baudouin I Material Copper Nickel Ribbed edge Shape Circle Ratio abs/roar Coin (180°) Weight (g) 6 Diameter (mm) 24 Thickness (mm) 1.74