Denier - Boleslaus I the Brave unknown mint

Boleslaus I — Bolesław Chrobry — was the first ruler to style himself king of Poland, though that title came only at the very end of his life in 1025. These deniers belong to his earlier period as duke, following the death of his father Mieszko I in 992. Polish coinage of this generation was heavily influenced by Bohemian and German prototypes, and attribution remains genuinely contested among specialists — Kopicki's classification has been revised and disputed repeatedly, with some pieces previously assigned to Bolesław now reallocated to later rulers on die-study grounds.