Russia
Grand Duke Svyatoslav Historical Series Medal 954 MS60 NGC, Diakov-1726. Struck in white metal. The Grand Duke is portrayed in armor facing right on the obverse. Reverse has Olga 's prayer for baptism. Engravers are Ivanov & Bobrovschiko. diameter is 79 mm. From the Historical Medal series produced during the reign of Catherine II in the 18th century.
Estimate: 300-500 USD