RUSSIA. Poltina, 1853-CNB HI. St. Petersburg Mint. Nicholas I. PCGS MS-63 Prooflike Gold Shield. KM-C-167.1; Bit-268. Pop: 1, none graded finer by PCGS in Prooflike. Nearly all blazing white with highly reflective surfaces. Blue toning near the top only adds to the attractiveness of this example.