6 Kreuzers - Charles I

Isenburg's existence as a sovereign entity was already on borrowed time when this piece was struck. The county had been reorganized into the Principality of Isenburg under the Confederation of the Rhine in 1806, giving Charles I a brief window of nominal sovereignty before Napoleon's collapse unraveled the entire structure. The Confederation dissolved in 1813, and Isenburg was absorbed by Austria and later assigned to Hesse-Darmstadt — leaving this 1811 issue among the final coinage produced under an authority that survived barely seven years in its elevated form.