1830, Russia, Nicholas I. Large Silver Rouble Coin.Mint Year: 1830Denomination: Silver RoubleMint Place: St. Petersburg (С.П.Б.)Mint Master: Nikolai Grachev (Н-Г, 1825-1842)Reference: Davenport 282, Bitkin 108, KM-161. R! Material: Silver (.868)Weight: 21.02gm Diameter: 36mmObverse: Crown above double headed eagle with shield at chest, holding band, thunderbolts and wreath in claws.Legend: МО ...