A beautiful mint piece.
Iger's undescribed punctuation variant.
Obverse: royal bust wearing crown, and armor, with tubular orifice seen from above, to the right, in the rim legend:
-SIG-III-D:G-REX-PO-M D-L-9-6;
Reverse: denomination marking -III-, below it the coats of arms of the Eagle of the Crown, the Sheaf of the Vasa dynasty and the Pose of the Grand Duchy of Lithuania, below it the legend in three lines:
-GROS-ARG-/-TRIP-REG-/-POLONIAE-, below it the coat of arms of the Levart in a shield, the sign of the rose and the branch of Ditmar;
