1 Ducat - Ferdinand III of Austria-Tuscany

Ferdinand III ruled Salzburg only because Napoleon needed somewhere to put him after handing Tuscany to France in 1801. The archbishopric had been secularized just two years earlier, transforming an ecclesiastical state into a secular principality — a transitional arrangement that lasted barely five years before Napoleon dissolved it entirely and absorbed the territory into the French Empire. These ducats thus belong to one of the shortest-lived secular coinages in the German-speaking world.

The Frühwald 889 attribution places this squarely in a tiny production window of roughly two years.