A nice, legible example of the ruble of Catherine II.
Obverse: bust of the Tsarina to the right, below her the mint mark СПБ, in the rim the legend:
Б-М-ЕКАТЕРИНА-II-IМП-ИСАМОД-ВСЕРОCC-;
Reverse: eagle of the Russian Empire, initials on the sides of the tail, in the rim legend:
1785 МОНЕТА - РУБЛЬ-;