1 Goldgulden - Frederick III of Saarwerden Bonn

Frederick III of Saarwerden held the archbishopric of Cologne for over three decades, and his goldgulden issues from the Bonn mint reflect the Rhine electoral mints operating at the height of the Rhenish Gulden monetary agreements. The four Rhenish electors — Cologne, Mainz, Trier, and the Count Palatine — had been coordinating gold coinage standards since the Currency Union of 1386, fixing weight and fineness to stabilize exchange across the fragmented German territories. Bonn served as a secondary mint to Cologne city proper, and pieces attributable specifically to that facility carry the Noss classification distinguishing them from the archbishop's other striking locations.