25 Céntimos Urrea de Gaén

Urrea de Gaén is a small agricultural municipality in the Bajo Martín comarca of Teruel, and like dozens of similar towns across Republican-controlled Aragon in 1937, it issued emergency cardboard fractional currency after metallic coinage vanished almost entirely from circulation — hoarded, melted, or simply absent in a province that had seen front lines shift repeatedly since the summer of 1936. The Consejo Municipal, the revolutionary administrative body that had replaced the pre-war ayuntamiento, authorized these pieces locally with no central oversight from Valencia.

Survival rates for Aragonese cardboard emergency issues are highly unpredictable. The material degrades easily, and many pieces from comparable municipalities are known from only a handful of examples.