Poland. Kazimierz Jagiellonczyk, 1446-1492. Crown Denar no date, Krakow mint, Obv: Eagle, Rev: Crown, below it a ring, Frynas P.18.4, Gum.H. 466 var., Kopicki 385, silevr 12 mm, weight 0,32 g., condition VF+, massive thick planvchet, remnants of a sheen, quite nice for the type
Coin previously attributed to John Olbracht, (Frynas p. 257)