A beautiful, periwinkle piece with a strong luster. Variety with eagle's legs bent.
A rarer coin in this state of preservation.
Obverse: crowned escutcheon with the coats of arms of the Crown and the Grand Duchy of Lithuania, above it in a half-arc the legend:
KROLESTWO POLSKIE, on the sides the date 18-31
Reverse: in an oak wreath the inscription 10/GROSZY/POLS-; under the wreath the initials K-G- Karol Gronau - the manager of the Warsaw Mint in 1829-1834;