2 Euros - Henri I William I

Issued to mark the centenary of Luxembourg's independence from the Dutch crown following the First World War, this coin commemorates both Grand Duke Henri and his ancestor William I, under whose rule Luxembourg gained its current borders through the 1839 Treaty of London. That treaty, which resolved the Belgian Revolution's territorial aftermath, reduced Luxembourg's territory by more than half — ceding the larger French-speaking portion to Belgium — while simultaneously confirming the remainder as a fully sovereign grand duchy under the House of Orange-Nassau.

William I himself reportedly resented the settlement.