50 Centimes Red and yellow

The Chambre de Commerce de Constantine issued emergency fractional notes during and after World War I to address a severe shortage of small coin — a problem that plagued much of French Algeria as metal was diverted to the war effort. These chamber-of-commerce bons de caisse were a common workaround across French colonial territories, legally sanctioned as local emergency currency but never intended for extended use.

Adolphe Jourdan was the dominant commercial printer in Algiers throughout this period, producing everything from municipal documents to colonial ephemera. His shop was the obvious choice for fast, low-cost fractional paper.