KM# 145 5 MARK
11.2000 g., 0.6250 Silver 0.2250 oz. ASW, 29 mm.
Subject:200th Anniversary – Birth of Carl Friedrich Gauss
Obv: Eagleabove date and denomination
Rev: Head 3/4 facing, dates atright Edge Lettering: PAUCA SED NATURA
Germany FEDERAL REPUBLIC
1977