The first Polish coin on which the name of the denomination was minted - DENARIVS.
A coin about which Kalkowski wrote that it was "a revelation of sorts," and Stronczynski added that it was"exceptional money, the minting of which soon had to be abandoned."
On the obverse, a misspelling of the titulature: DOA(reversed)IC BOLEZA.
A rare and historically important type of denarius.
Silver, diameter 17 mm, weight 0.77 g.