A nice, legible piece. A rare denomination on the Polish market. Slightly deficient.
Obverse: in the pearl rim bust of the ruler in armor and laurel wreath, to the right, under the bust initial of the mint M, in the outer rim legend:
HENRICVS-III-D-G-FRANC-ET-POL-REX-1580;
Reverse: in pearl rim floral cross with royal initial, in outer rim legend:
-SIT-NOMEN-DOMINI-BENEDICTVM-C;