10 Rupiah

Bank Negara Indonesia's Sumatran branch issues occupy a strange corner of Indonesian revolutionary finance. During the independence struggle against the Dutch, the Republican government couldn't maintain centralized monetary control across the archipelago, so regional branches were authorized to issue their own currency. The Sumatran notes of 1947 circulated in genuinely contested territory — Dutch military actions (the first "Police Action" launched in July 1947) disrupted supply lines and made uniform currency distribution across the island practically impossible.

Survival rates for this series are uneven. Notes that circulated in interior regions away from Dutch-controlled coastal zones often suffered worse physical damage than those in urban areas, where hoarding began almost immediately once the military situation deteriorated.