1⁄24 Thaler - Jérôme Bonaparte

Westphalia was a Napoleonic construct — carved out of Prussian, Hessian, and Brunswick territories in 1807 and handed to Jérôme Bonaparte, Napoleon's youngest brother, as a reward for loyalty rather than competence. The kingdom lasted only six years before collapsing under the weight of French requisitions, an unpopular court, and military disaster in Russia. Jérôme's government adopted a decimal-influenced monetary system partly modeled on French reforms, though the old Thaler denominations were retained to ease acceptance among a skeptical local population.

The billon content reflects chronic silver shortages across Napoleonic Europe by 1807.