The Oksana Bennett Collection of Russian Coins | Siberia, Catherine II 'Velikaya' (1762-1796), Kopek, 1778-KM, Kolyvan, crowned cypher in wreath, rev. crowned coat of arms, edge plain, 6.67g, 12h (Brekke 410; Uzd. 4337; Diako 384; Bitkin 1156), very fine