Piece with good details and preserved remnants of luster.
On the obverse the initials of Nikolai Grachev - St. Petersburg mincmaster.
Obverse: eagle of the Russian Empire of the 1825 pattern, under it initials НГ, in the rim the legend:
1830 ГОДА. МОНЕТА РУБЛЬ;
Reverse: in laurel and oak wreath crowned mint ordination information:
ЧИСТАГО/СЕРЕБРА/4 ЗОЛОТН./21 ДОЛЯ./С.П.Б..;