KM# 151 5 MARK10.0000 g., Copper-Nickel Clad Nickel, 29 mm. Subject: 100thAnniversary – Birth of Otto Hahn Obv: Stylized eagle abovelegend Rev: Symbols of Hahn’s studies in chemistry, name anddates below Edge Lettering: 1938 ERSTE SPALTUNG DESURANKERNS Germany FEDERAL REPUBLIC 1979