Silesia, Duchy of Oppeln, Bernard (1437-1449), Johann II (1437-1439) and Nicholas I (1437-1476), Hohlpfenig Oppeln, issue from years before 1450-ca. 1460
Obverse: half Knight's cross forked at the ends, half Eagle straight ahead with head to the right
Diameter 15 mm, weight 0.29 g