25 Céntimos Linares

Linares, in the province of Jaén, was one of the most industrially significant mining towns in early twentieth-century Spain — lead and silver extraction had made it unusually prosperous by regional standards. During the Civil War and its immediate aftermath, the national currency supply collapsed at the local level, and hundreds of Spanish municipalities issued their own emergency fractional notes to keep small commerce moving. The Ayuntamiento de Linares was among them.

The sole security feature is an official municipal stamp — ink on paper, nothing more. Forgery was a genuine concern with these issues, and the stamp was the only check against it.