A very nice denarius.
Variety with a cross behind the rider with a spear and a thin "shield".
In addition, under the rider a rosette, and the name of the ruler in illiterate writing.
The first type of coins of Boleslaw Szczodry. His princely denarius from the mint in Cracow, dated 1070-1076.
Silver, diameter 14.5 mm, weight 0.71 g.