A beautiful mint piece.
Iger's undescribed variant of obverse punctuation.
Obverse: royal bust wearing a crown, and armor, with a tubular orifice seen from the side, to the right, in the rim the legend:
SIG III D G R-POLON M D L;
Reverse: denomination -III-, below it the coats of arms of the Eagle of the Crown, the Sheaf of the Vasa dynasty and the Pogo of the Grand Duchy of Lithuania, below it the legend in three lines:
GROS-ARG-/TR-R-POLO/-NI-95-, the last line splits the coat of arms Lewart in a shield, between the initials of the Great Crown Treasurer Jan Firlej -I-F-;