6 Kreuzers - Frederick I

Frederick I of Württemberg owed his royal title directly to Napoleon, who elevated the duchy to a kingdom in December 1805 following the Treaty of Pressburg. The upgrade demanded a complete monetary reissue — ducal coinage was no longer appropriate for a sovereign king — which explains the sudden proliferation of new denominations struck from 1806 onward. The six kreuzer billon pieces belong to that first wave of regal coinage, issued while Frederick simultaneously restructured Württemberg's fragmented territorial acquisitions into a coherent administrative state.

Frederick died in 1816, two years after this type ceased production, having spent his final years navigating the post-Napoleonic settlement at Vienna.