Watch List notes:

Russia - 6 Roubles 1834, Platina munten, NICHOLAS I 1825–1855 St. Petersburg. Crowned double-headed imperial eagle. Rev. value and date.Fr. 142; KM. 178.Platinum was discovered in the Ural Mountains in the early eighteenth century. In 1828 the Russian Czar Nicholas I ordered the mintage of platinum coins. The three, six and twelve Roubles were struck in platinum. Although platinum was a precious metal, the Russian population confused the metal often with silver. This led to the ceasing of the coinage of platinum Roubles in 1845.RRR. Mintage: only 11 pieces NGC AU58