100 Francs

The Banque du Sénégal was a colonial institution established in 1853 under French imperial charter, one of a small number of privileged colonial banks granted note-issuing rights in French overseas territories. It operated out of Saint-Louis before Dakar's rise to administrative dominance, serving a commercial economy built largely on gum arabic and groundnut trade.

The designer credit "Cornouailles" likely refers to the engraving firm rather than an individual — attribution at this level of the catalog is uncertain, and the name does not correspond cleanly to any well-documented Paris printing house of the period. Notes from this issuer in any surviving condition are genuinely rare, with the long date range reflecting reuse of the same plate across several decades rather than continuous fresh production.