Crown half-groschen, C. Jagiellon – M.Cz.III/N 47
| Item | Crown half-groschen “Piorunek”, Kingdom of Poland, Casimir Jagiellon |
| Id no. | M.Cz.III/N 47 |
| Period | 1479-1492, minted in Cracow |
| Place of discovery | Częstochowa, Old Town |
| ul. Warszawska | |
| Material | silver |
| Weight and size | 1.03 g; 19 mm |
| Location in exhibition | Showcase #6 |
Obv.: A crowned eagle, with the circumscription: MONETA KAZIMIRI + [COIN OF CASIMIR]
Rev.: A crown; below it, the Poraj coat of arms (rose) of Piotr “Piorun” of Kurozwęki, crown treasurer; with the circumscription: REGIS POLONIE + [THE KING OF POLAND]
Part of the treasure discovered in 1962.