A beautiful circular piece.
Patina, tarnish. Lots of preserved mint luster.
On the reverse, initials of Ivan Zaytsev - St. Petersburg mincmaster of 1780-1783.
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, on the sides of the tail initials И-З, in the rim legend:
1781 МОНЕТА - РУБЛЬ-;