Денарий, Польша, Boleslaw the Bold (1058-1080), м.д. ?

POLAND / Boleslaw the Bold 1058-1080. royal denarius; Obv: King's bust with raised sword left, back Z; Rev: Gate with three towers crowned with spherical domes; Gum.H. 71, Gum.P. 48, Kop. 27 (R4), P. 32, Such. IX/2; silver 0.61 g, eccentric reverse, beautiful portrait with all details of the stamp drawing preserved, patina