A nice Prague penny. Remnants of luster.
Obverse: in the inner rim a crown, in the outer rim a legend:
+IOhANNES:PRIMVS/.
+DEI GRATIA+REX:BOEMIE;
Reverse: in the rim a Bohemian lion, in the outer rim legend:
+GROSSI PRAGENSES;
It is worth remembering that John I of Luxembourg was the titular king of Poland, until 1335.
