5 Francs Belgium - King Leopold II

This piece was issued by the Banque Centrale du Congo in 1999, a year when the country was already two years into the Second Congo War — the deadliest conflict on African soil since World War II. Producing commemorative coinage during active warfare requires either extraordinary optimism or a mint operating well outside the country's borders, and this issue was almost certainly struck abroad.

Naming the coin after Leopold II, whose personal rule of the Congo Free State from 1885 to 1908 resulted in mass atrocities estimated to have killed millions, makes the attribution historically charged in a way few modern circulation issues can match.