Very nice piece with beautifully preserved details and luster.
Very rare variety with PO in the legend.
Obverse: in the rim bust of the ruler to the right, in the outer rim legend:
IO CASIM D G-REX POL & SV;
Reverse: in the rim crowned shields of the Coat of Arms of the Crown of the Kingdom of Poland, the Grand Duchy of Lithuania and the Vasa dynasty, next to the Snopes initials T L-B, under the crown the denomination mark VI, in the outer rim legend:
GROS-ARGE-SEX-REG-PO-1659-;
