John II Casimir, 18 groschen 1654, Fraustadt

Obverse: a royal bust in a laurel wreath, wearing armor and a cloak, with visible straps on the armor sleeves, holding the Order of the Golden Fleece, facing right; the legend around the edge reads:
IOAN•CASIMI-DG REX PO & S•;

Reverse: a five-field heraldic shield crowned with a jeweled crown within a closed ring, bearing the coats of arms of the Crown of the Kingdom of Poland, the Grand Duchy of Lithuania, and the "Sheaf" coat of arms of the Vasa dynasty; on either side of the shield, the denomination mark I-8; the outer ring bears an inscription divided by the Wieniawa coat of arms of Bogusław Leszczyński, Grand Crown Treasurer, and the initials MW: MONET•ARGEN-REGNI•POL•1654;