1 Piastre Red numeral

The long print run spanning 1932 to 1949 produced enough signature and script variants to make this a genuinely complex series for specialists. Five distinct signature combinations are recorded, with the Lao-script overprint itself shifting mid-run from Old Lao to New Lao letterforms — and then again within New Lao, splitting over a single diacritical dot under the "O" in "MÔT." That kind of orthographic micro-variant is rarely the result of error; it typically reflects a deliberate official script reform, in this case tied to French colonial standardization efforts in Laos during the 1940s.

Printed by the Banque de France in Paris, with engraving by Georges Hourriez. The Minost & Laurent signature pairing corresponds to the latest issues, bracketing the final years of French Indochina's monetary administration before the post-war restructuring overtook the series entirely.