Russian coins "Pugachev Ruble" Sestroretsk Ruble silver coin of 1771.

Russian rare coins Sestroretsk Ruble minted in 1771 - rare
A RUSSIAN 19TH CENTURY NOVODEL SESTRORETSK RUBLE

Russian coins Sestroretsk Ruble minted in 1771 - rare
 Russian coins Sestroretsk Ruble 

Russian coins 1 Sestroretsk Ruble minted in 1771 - rare "Pugachev Ruble" ruble. St. Petersburg mint.
weight 22 gr, 0.900 fine silver. 37 mm diameter.

Sestroretsk Ruble also known as the "Pugachev Ruble" because the date 1771 corresponds to the period of the rebellion of Emelyan Pugachev who was a pretender to the throne, in the name of Peter III, and the coin design does not contain the name or monogram of Catherine II.
Sestroretsk mint at Sestroretsk Armoury plants - Russian Temporary mint 1757-1778.