10 Francs R.M.S. Aquitania

The RMS Aquitania, launched by Cunard in 1914, outlasted three of her four-funnel contemporaries — Titanic, Britannic, and Lusitania — by decades, finally being scrapped in 1950. She served in both World Wars as a troopship and hospital ship, accumulating more wartime mileage than any other major Cunarder. The Congo's commemorative program in the early 2000s leaned heavily on foreign maritime subjects with no meaningful connection to the issuing state, a pattern common among small-denomination silver issues designed explicitly for the collector market rather than circulation.