Beautifully preserved details.
Very well minted, for a Lvov issue.
The coin is the only one, appreciated with the highest note so far given in NGC grading.
Obverse: in the rim bust of the king wearing a crown, armor to the right, on the sides denomination mark I-8, in the outer rim legend:
IO CASIM D G REX-POL M D L RVS PRVS &;
Reverse: crowned five-field escutcheon with the coats of arms of the Crown, the Grand Duchy and the Vasa dynasty, in the outer rim legend:
NEC NON SVHC GOTH VANDL Q HR RE;