Switzerland - 1/2 Franc - 2010 - Weight 2,2 gr - Copper/Nickel - Size 18,2 mm - Thickness 1,25 mm - Alignment Medal (0°) - Engraver Obverse / Antoine Bovy - Engraver Reverse / Albert Walch - Note : Mintmark B = Bern / Switzerland - Edge : Reeded - Mintage 27 000 000 - Reference KM# 23a (1968-2011)