24 Mariengroschen - Frederick William

Brunswick-Wolfenbüttel had been dissolved as a political entity under Napoleonic reorganization, absorbed into the short-lived Kingdom of Westphalia in 1807. Frederick William — who had famously led his Black Legion on a fighting retreat from Bohemia to the North Sea coast in 1809 rather than submit to French authority — only recovered his duchy after Napoleon's catastrophic Russian campaign collapsed the continental system. These coins were struck in the immediate aftermath, as the duchy reconstituted its administration and reasserted control over its own currency during the chaotic final years of the Napoleonic Wars.

Frederick William died at Quatre Bras in June 1815, two days before Waterloo.