ND (1384-86). AR Denar. Cracow Mint. Eagle / Shield with arms and large Ο above. Gum. 404; Kop. (old) 30.1.I.b....

ND (1384-86). AR Denar. Cracow Mint. Eagle / Shield with arms and large Ο above. Gum. 404; Kop. (old) 30.1.I.b.rr; as Kop. 349. About VF.
The style of the eagle and of the arms, as well as the large O, clearly match the style shown in the old Kopicki, as well as the next piece with a Η over the shield.