50 Céntimos Calpe

Calpe — a small coastal municipality in Alicante province — was among hundreds of Spanish towns that issued their own emergency fractional currency during the Civil War after the Republic's central government failed to maintain an adequate supply of small-denomination coins. These locally printed notes, collectively known as billetes de necesidad, were typically produced under improvised conditions with whatever printing equipment the town hall or local committee could access.

The Gari Mon catalogue remains the authoritative reference for this material, and the 402-B designation indicates a distinct variety within the Calpe issues — likely a paper, ink, or typographic difference from a companion type.