1 Peseta Castellar de Santiago

Castellar de Santiago is a small municipality in the province of Ciudad Real, and like hundreds of Spanish towns during the Civil War, its municipal council issued emergency fractional currency when the Republic's central supply of small-denomination coinage dried up almost entirely after 1936. These local emission notes — known collectively as "billetes de necesidad" — were typically designed and printed under improvised conditions, often by local printers with no specialist banknote experience, which accounts for the heavy card stock used here in place of proper security paper.

The Gari Montllor catalog remains the definitive reference for Spanish Civil War municipal issues, and the C-suffix designation within #477 indicates a distinct variety within the Castellar de Santiago series — likely differentiated by signature, serial style, or a minor printing variation rather than denomination change.