100 Francs/Frang Type 1970

Luxembourg's Caisse Générale de l'État was a state treasury institution rather than a conventional central bank, a distinction that mattered less to users than to economists — but it explains why the issuing authority changed when the Banque Centrale du Luxembourg eventually absorbed those functions decades later. Bradbury Wilkinson, the New Malden firm with deep roots in security printing across the British Commonwealth and beyond, produced the note using their established intaglio methods.

The bilingual denomination — Francs and Frang — reflects Luxembourg's official trilingualism in practice, with Luxembourgish given parity alongside French on the face of a state instrument.