A very nice example of a coin of Charles III, who, thanks to his marriage to Maria Amalia Saxon, who was the daughter of King Augustus III Saxon of Poland, lends a historical element of Polishness to this issue.
Obverse: bust of the ruler to the right, legend in the rim:
CAROL-III-D-G-HISP-ET-IND-R-1788;
Reverse: coat of arms of Spain banded with the Order of the Golden Fleece, 4-S on the sides, in the rim legend:
-AUSPICE-DEO-IN-UTROQ-FELIX-;
Gold .875, diameter 30 mm, weight 13.51 g.