1/2 Gulden Japanese Occupation

Issued for the Netherlands East Indies following the Japanese military takeover in early 1942, this note was part of a parallel currency system designed to displace Dutch colonial money while signaling new administrative authority. The issuer name "Japansche Regeering" uses Dutch — a deliberate choice, likely to ease acceptance among a population still commercially fluent in the colonial language.

The watermark is the sole security feature, which proved inadequate; counterfeiting became a genuine problem across the occupation currency series. Printed in Japan and shipped to the archipelago, the notes often arrived in bundles still brick-fresh, but humid tropical conditions degraded paper condition rapidly in circulation.