⅙ Thaler - Jérôme Bonaparte

The Kingdom of Westphalia was a Napoleonic invention — assembled in 1807 from Hessian, Prussian, and Brunswick territories and handed to Jérôme Bonaparte, Napoleon's youngest brother, as a model constitutional monarchy meant to demonstrate French administrative superiority to German princes. It lasted eight years. Jérôme ran it into near-bankruptcy through personal extravagance so flagrant that Napoleon wrote him repeated letters of rebuke, at one point calling him "a king of Cocagne."

The coinage system Westphalia adopted was nominally tied to the Conventionsthaler standard, a legacy of older German monetary conventions that sat awkwardly alongside French imperial ambitions. The kingdom dissolved in 1813 as Napoleonic power collapsed following the Russian campaign.