A very nice piece. Well preserved details, a lot of gloss in the background.
Obverse eagle of the Empire, at its tail the initials MW, in the outer rim the legend:
ЧИСТАГО СЕРЕБРА 6 ЗОЛОТНИКОВЪ 31 1/2 ДОЛЕЙ;
Reverse: in laurel and oak wreath inscription:
1 1/2/РУБЛЯ./10/ZLOT-/1837;