20 Francs

The Banque Centrale du Congo Belge et du Ruanda-Urundi was itself a brief institutional experiment — created in 1952 to replace the Banque du Congo Belge and dissolved within a decade as independence reshaped the entire region. This note falls squarely in that transitional window, issued by an authority that would not survive the 1960s. Thomas De La Rue handled the printing throughout the series, as they did for much of Belgium's colonial currency infrastructure in this period.

Pick 31 is less frequently encountered in genuinely circulated condition than its face value might suggest — smaller denominations in the series absorbed most day-to-day commerce.