RUSSIA. Ruble, 1844-CNB KB. St. Petersburg Mint. Nicholas I. NGC AU-58.Dav-204; KM-C-168.1; Bit-423. A stupendously handsome piece that toes the line between circulated and uncirculated, this Russian exemplar illustrates vivid details that are illuminated by a cool steely gray color with only the faintest evidence of rub with some chatter in the fields. A truly handsome example of a Ruble.