Cast iron (Bialogon) of a very rare commercially available medal dedicated to the bishop of Cracow, founder of the Warsaw library.
Obverse: bust of the bishop to the right, in the rim the legend:
AND-ZALUSKI EPUS CULM-ET POMES- A-CANC-R-POL;
Reverse: facade of the library, above it the inscription: CIVIUM IN USUS, in the segment the legend:
BIBL-PUBL-VARS-FUND-/A-D-MDCCXLV-;
Cast iron, diameter 51 mm, weight 34.53 g.