Coin of this type was produced in 1766-1776, 1786, 1789-1790, and in the years 1794-1796 at the Ekaterinburg mint (symbol - "ЕМ" in 1783-1795 in the lower-Suzun mint (obznana - "КМ" and no denote the place of manufacture (1789, 1793 and 1795).
The obverse of the coin shows the monogram of Catherine II of the letters of the "I"(Empress), "Е"(Catherine) and Roman numerals "II" Upstairs the Imperial crown. The sides of the year, is divided into two parts - "17" and "85". Image is surrounded by two branches connected at the bottom with a bow.
The reverse of the coin depicts George on horseback spearing a snake-like dragon with wings. A horse letters "К"and "М"(Kolyvan copper). Below in a semicircle is a tape with a nominal value of "ПОЛУШКА"