500 000 Dinara

The Republika Srpska Krajina — the Serb-controlled enclave carved out of Croatia during the 1991–1995 war — never achieved international recognition, and its banking infrastructure existed almost entirely on paper. This denomination was part of a hyperinflationary spiral that made the notes effectively worthless within weeks of issue; the 500,000 dinar face value was a direct consequence of Yugoslavia's broader monetary collapse, which the RSK's economy was too small and too isolated to insulate itself from.

ZIN in Belgrade printed the series, which tells you something about where the real institutional support for the RSK lay. After Operation Storm in August 1995, the entity ceased to exist entirely.