50 Céntimos Vall de Uxó

Vall de Uxó — now Vall d'Uixó — is a town in Castellón province that, like hundreds of Spanish municipalities, was forced to generate its own fractional currency after the Republic's silver and bronze coinage essentially vanished from circulation in the first months of the Civil War. The Consejo Municipal issues of 1937 filled a gap the central government couldn't. At 50 × 41 mm, this is among the smallest paper issues produced anywhere during the conflict — functionally a token on paper.

Catalogued under Gari Montaner, the standard reference for Spanish Civil War local issues, which itself runs to thousands of entries from this period alone.