50 Céntimos Aigüesbones de Montbui

Aigüesbones de Montbui — today simply Santa Margarida de Montbui — issued cardboard emergency currency during the Spanish Civil War under the municipal council's authority, part of the sweeping local monetary fragmentation that followed the July 1936 collapse of normal financial circulation across Republican-held Catalonia. Hundreds of Catalan municipalities printed or stamped their own fractional notes when metallic coin hoarding drained small change entirely from commerce. Most issues were redeemed locally and destroyed, which accounts for the scarcity of surviving examples in any condition.