1 Prague Groschen Counterstamped

Ulm's practice of counterstamping foreign silver was a pragmatic response to the flood of Bohemian groschen moving through southwestern German trade routes in the late fourteenth century. Rather than reject or remelt perfectly serviceable coin, the city applied its own mark to vouch for the piece's acceptability within local commerce. The host coins originated in the Prague mint under Wenceslaus IV, whose reign was marked by repeated conflict with the Bohemian nobility and two depositions — instability that did nothing to diminish the groschen's commercial reach across central Europe.

Krusý U2.6 is among the more precisely documented of the Ulm counterstamp types, though attributing individual examples to a narrow date within the 1398–1419 window remains difficult without die study.