A rare type of denarius in beautiful condition, as evidenced by the high NGC MS63 note.
A denarius of Boleslaus IV with the emperor on the throne, the issue of which is linked to the tribute paid to Frederick Barbarossa in Krzyzkow near Poznan in 1157.
Variety with arches on the sides of the figure, with the emperor holding a lily scepter.
Name notation on the reverse: BOLEZLAVS (some letters twisted).
