5 Rupiah Serang, Banten Residency

The Residency of Banten was one of dozens of regional Indonesian authorities that issued their own emergency currency during the turbulent years of the Indonesian National Revolution — the period between the 1945 Declaration of Independence and formal Dutch recognition in 1949. With the central government in Yogyakarta under constant pressure and normal banking channels disrupted by the returning Dutch colonial administration, residencies and local bodies printed their own notes to keep local economies functional. Banten had a particularly long history of resistance to outside authority, stretching back to the precolonial sultanate.

These locally produced emergency issues were typically printed on whatever paper and equipment was available. Survival rates are low — not because of heavy circulation, but because many were deliberately withdrawn and destroyed once the Republic consolidated its monetary system.