25 Céntimos Castillo de Locubín

Castillo de Locubín is a small municipality in the province of Jaén, Andalusia, and this 25 céntimos note is a product of the Spanish Civil War's near-total collapse of small-denomination coinage. From 1936 onward, Republican-controlled municipalities across Spain — including hundreds of tiny towns in Jaén — were authorized to issue their own emergency scrip to keep local commerce functioning. The provincial copper and silver coins had largely vanished from circulation through hoarding.

The official stamp is the only security measure, which was typical of the smallest ayuntamientos, where printing resources were whatever the local council could arrange. Many of these hyper-local emissions are known from single surviving examples.