A beautifully preserved piece.
Obverse: bust of Sigismund III Vasa, wearing crown and armor, with tubular orifice, to the right, in the rim legend:
SIG-III-D-G-REX-PO-M-D-L;
Reverse: denomination mark III, below it the coats of arms of the Eagle of the Crown, the Snope of the Vasa dynasty and the Pogon of the Grand Duchy of Lithuania, on the sides of the Snope the date 15-9Z, below it the legend in two lines:
GROS-ARG/TRIP-M-D L below it the Chalecki coat of arms of the Treasurer Demetrius Chalecki with stars on the sides;