2 Euros - Henri I Constitution of Luxembourg

Issued to mark the 150th anniversary of Luxembourg's 1868 constitution, which was drafted in the aftermath of the 1867 Treaty of London — the agreement that neutralized the Grand Duchy, forced the demolition of its famous fortress, and guaranteed its independence under great-power guarantee. The constitution that followed was notably liberal for its time and has remained the foundational law of the state, amended but never replaced.

Grand Duke Henri appears on the coin in his capacity as reigning monarch, a role that became briefly controversial in 2008 when he publicly opposed a euthanasia bill — prompting parliament to strip the monarchy of its legislative veto.