1 Rupiah

One of the more obscure emergency issues to come out of the Indonesian National Revolution, this note was authorized not by the central republic in Yogyakarta but by the Sub-Province of South Sumatra operating out of Bukittinggi — a city that was itself the seat of the Emergency Government of the Republic of Indonesia (PDRI) during the Dutch "Police Action" of late 1948. The political geography here matters: Bukittinggi in West Sumatra was issuing currency ostensibly for South Sumatra, a jurisdictional anomaly produced entirely by wartime dislocation.

Locally printed under blockade conditions, the guilloche underprint represents a genuine attempt at rudimentary security rather than a formality — counterfeit suppression was a real operational concern when Dutch forces were actively destabilizing the republican monetary system.