Very rare variant according to Gregory Romanczyk's study - with a three dot after before the date, instead of the typical rosette or dot.
The second type of Cracow grosz from 1546, with the initials ST and the coat of arms Leliwa of the treasurer (Jan Spytek Tarnowski).
Variety with two rosettes on the sides of the crown on the obverse.
Nice surface luster and overall presentation of the coin.