100 Dollars / 100 Piastres

The Banque de l'Indo-Chine held a renewable monopoly on currency issuance in French Indochina, and this high-denomination note — dual-titled in both French and a piastre equivalent — circulated at a time when the piastre was still pegged to silver, creating constant friction between the bank's Paris principals and colonial treasury officials who wanted a gold standard. The dual denomination was a practical concession to regional trade networks spanning Cochinchine, Tonkin, Annam, Laos, and Cambodia, where both terms were in use.

Bramtot was a Prix de Rome laureate; Duval handled ornamental composition. Robert's engraving was executed at the Imprimerie Nationale in Paris. Few notes from this series survive in any condition — the tropical climate was ruthless on paper stock, and the denomination meant limited everyday handling but concentrated exposure to humidity in bank strong rooms.