Russia
Grand Duke Oleg Medal 947 Building of Churchyards MS61 NGC, Diakov-1724. Struck in white metal. The Grand Duke is portrayed in armor facing right on the obverse. Reverse has Olga with scepter, buildings on both sides. Engravers are Ivanov & Alexeev, diameter is 79 mm. From the Historical Medal series produced during the reign of Catherine II in the 18th century.
Estimate: 300-500 USD