Denier - Boleslaus I the Brave unknown mint

Bolesław I came to power in 992 following the death of his father Mieszko I, inheriting a duchy that had only formally adopted Christianity in 966. These deniers, struck somewhere in the decade or so before Bolesław assumed the royal title in 1025, represent Poland's earliest coinage — a deliberate assertion of political independence from the Holy Roman Empire, whose own pfennig designs Bolesław's moneyers closely copied. The mint location remains unresolved; Gniezno and Poznań are the most frequently proposed candidates.