A very rare variety of the first type of Boleslaw the Bold denarii (princely, with a representation of the ruler on horseback).
Distinguished by four spheres behind the rider's head, instead of the popular letter S, or the rarer cross.
The name of the ruler in an incorrect transcription - BE-LZ-VA-S-.
Ex. Karl Stephens (1990).
Silver, diameter 13 mm, weight 0.58 g.