20 Kronen (CN stamp)

Fiume's postwar currency situation was chaotic by any measure. When the city's political status became genuinely unresolved following the 1918 armistice — neither cleanly Italian nor Yugoslav — the local Consiglio Nazionale improvised by stamping existing Austro-Hungarian Kronen notes with its own authority markings rather than waiting for a formal monetary settlement that, in practice, never came cleanly. The "CN" overstamp converted Imperial paper into a locally sanctioned instrument almost overnight.

D'Annunzio's 1919 seizure complicated matters further, as the city cycled through multiple competing authorities in rapid succession, each leaving its own mark on the circulating supply.