Very nice ruble of Catherine. Great details.
Date pierced.
Obverse: bust of the Tsarina to the right, mint mark СПБ below her, legend in the rim:
Б-М-ЕКАТЕРИНА-II-IМП-IСАМОД-ВСЕРОС;
Reverse: eagle of the Russian Empire, initials on the sides of the tail, in the rim legend:
1765/6 МОНЕТА - РУБЛЬ-;