A nice piece.
Interesting variant of the stamp where one of Firlej's initials fused with the hook from the known mint.
Obverse: royal bust wearing crown and armor, with tubular orifice seen from the side, to the right, in the rim legend:
SIG-3-D-G-REX-P-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 Chase of the Grand Duchy of Lithuania, below it the legend in three lines GROS ARG/TRIP REG/POLONI, below it the coat of arms Lewart in a shield, between the initials of the Grand Treasurer of the Crown Jan Firlej - I-F; in the right field the mint mark "lion pierced with a hook" of Daniel Koste separates the abbreviation of the date 9-6;
