50 Centimes - Chambres de Commerce du Nord (59) et du Pas-de-Calais (62)

The Chambres de Commerce du Nord and Pas-de-Calais operated as a joint issuing authority — unusual even by the standards of French emergency coinage legislation, which generally permitted individual chambers to issue independently. Their collaboration reflected the economic interdependence of the two departments, whose textile and mining industries shared labor pools, rail lines, and commercial networks across an administrative border that meant little in practice.

These small-format chamber notes persisted well into the 1920s largely because the wartime destruction of northern France had left coin circulation chronically thin for years after the Armistice.