RUSSIA. Ruble, 1765-CNB RI. St. Petersburg Mint. Catherine II (the Great). NGC Unc Details--Cleaned. KM-C-67A.2; Bit-187. While unnaturally bright from a past cleaning, this example displays no signs of circulation or handling, which only serves to increase the charm of the specimen. A wonderful piece that is perfect for any specialist in the series. From the Sigma Collection.