1000 Francs - Cérès and Mercure type 1927 modificated

The "Cérès et Mercure" 1000 Franc type first appeared in 1927 and was modified for this later run, which ran through the fall of France in June 1940 — the final signature date of 25 July 1940 falls just weeks after the armistice, meaning the last notes of this series were issued under the Vichy-era Banque de France. Walhain designed and Deloche engraved the plates, a pairing responsible for several high-denomination Banque de France issues of the interwar period.

The three-signature authentication system — Secrétaire Général, Caissier Principal, Gouverneur — rotated through multiple officeholders across the date range, giving collectors a fairly precise tool for dating individual notes within the series.