RUSSIA
Nicholas I, 1825-1855. 3 Rubles 1830 CΠБ, St-Petersburg. Platinum. Proof strike. Obv. Heraldic eagle. Rev. 3 РУБΛИ / НА CЕРЕБРО / 2 ЗОΛ 41 ДОΛ ЧИСТОЙ УРАΛЬСКОЙ РΛАТИНЫ. KM 177; Fr. 160. PT. 10.35 g. PCGS PR 63
Only two coins graded proof at PCGS, none at NGC.