A very nice piece of a 10-penny coin from the first year of minting.
Variety with colons MIEDZ and KOL.
Obverse: crowned three-field escutcheon with the coats of arms of the Crown of the Kingdom of Poland, the Grand Duchy of Lithuania and the Ciołek of the Poniatowskis, with a legend in the rim:
STAN:AUG:Z-B-L-KROL POL:W-X-L-;
Reverse: 10/GR:MIEDZ:/250 1/2./Z GRZ:KOL:/1787./E.B.;