50 centimes - Chambre de Commerce de Libourne [33]

French chambres de commerce were authorized to issue emergency small-denomination notes from 1914 onward as centimes and franc coinage vanished from circulation — hoarded by the public and consumed by wartime metal demands. By 1918, dozens of regional chambers had their own series in circulation, Libourne among them. Wetterwald Frères, a Bordeaux printer active across several Gironde departmental issues, handled a number of these contracts, which accounts for the family resemblance between several southwestern French emergency notes of the period.

JP#72.23 places this within a documented series. The watermarked paper was a minimal but deliberate security measure — adequate for a note no one expected to circulate long.