50 Céntimos Colomera

Colomera is a small municipality in Granada province, and like hundreds of Spanish towns during the Civil War, its municipal council issued fractional paper currency in 1936–37 to address the acute shortage of small coin. The Republican government's inability to supply adequate change at the local level pushed this responsibility onto ayuntamientos and consejos with no printing infrastructure to speak of — which is precisely what you're looking at here.

These hyper-local emissions were produced in tiny quantities and almost never left the town where they circulated. Survival depends almost entirely on whether a single hoard was preserved.