Switzerland - 20 Rappen - 1955 - Weight 4,2 gr - Copper-Nickel - Size 21,05 mm - Thickness 1,65 mm - Alignment : Medal (0) - President / Max Petitpierre (1955) - Designer Obverse / Karl Schwenzer - Designer Reverse / Karl Freidrich Voight - Mint Mark B = Bern - Edge : Smooth - Mintage 9 103 000 - Reference KM# 29a (1939-2000)