Denier - Sobeslaus Slavník

Sobeslaus Slavník was a member of the Slavník dynasty, the powerful Bohemian noble family that rivaled the Přemyslids for dominance over the region. In 995 — almost certainly the terminal date of this coinage — Duke Boleslaus II of Bohemia ordered the massacre of the entire Slavník clan at their stronghold of Libice, eliminating the family as a political force in a single violent stroke. Sobeslaus himself escaped only because he was abroad at the time, and the dynasty never recovered.

Cach 156 is among the rarer attributions in early Bohemian coinage precisely because the issuing authority existed for so short a window before annihilation.