A nice piece of 1766 half gold.
The piercing in the POO/L legend.
Obverse: crowned five-field escutcheon with the coats of arms of the Crown, the Grand Duchy of Lithuania and the Ciołek coat of arms of the Poniatowskis, the escutcheon on a laurel and palm wreath, in the rim the legend:
STANISLAUS AUG.D.G.REX POL M D.L.;
Reverse: inscription in 6 lines:
2.GR/CLX.EX./MARCA/PURA-COL./1766/F.S.;