A very nice example of a Krakow trojak.
A charming patina that partially conceals the coin’s natural luster.
Obverse: a bust of the ruler wearing a crown and armor, with a tubular collar, facing right; the legend on the rim reads:
SIG•III•D G•REX•POL•M D L•;
Reverse: denomination mark •III•, below it the coats of arms of the Crowned Eagle, the Sheaf of the Vasa dynasty, and the Pogoń of the Grand Duchy of Lithuania; below them the date 16-21; further down, a three-line legend:
GROS:ARGE/TRIP•REGN/POLONI, with the Sas coat of arms below it;
