A nice piece with well-preserved details and lots of luster.
Obverse: royal bust wearing crown, and armor, with tubular orifice seen from above, to the right, in the rim legend:
SIGI-3-D-G-REX-PO-M-D-L-;
Reverse: denomination III, below it coats of arms Eagle - of the Crown of the Kingdom of Poland, Snop - of the Vasa dynasty and Pogo - of the Grand Duchy of Lithuania, below it legend in three lines:
GROS-ARG/TRIP-REG/POLONI, below it the coat of arms Lewart in a shield, between the initials of the Great Crown Treasurer Jan Firlej - I-F; in the left field the abbreviation of the date 92, in the right field the mint mark "mint hooks" of Teodor Busch;