RUSSIA. 5 Rubles, 1831-CNB NA. St. Petersburg Mint. Nicholas I. PCGS Genuine--Mount Removed, AU Details. Fr-154; KM-C-174; Bit-6. A lovely example of an early and <strong>SCARCE</strong> Russian Imperial 5 Rubles. Though this coin has been mounted at one time, this coin still displays strong eye appeal. With light circulation, the details evident are still very strong. An excellent addition for the collector of gold or Russian Imperial on a budget.