15 Centimos Olot

Olot's wartime iron coinage was a direct consequence of the Republican government's catastrophic loss of control over metal supplies during the Spanish Civil War. Municipal authorities across Catalonia — Olot among them — issued their own emergency fractional currency when centrally produced coinage ceased to reach ordinary commerce. Iron, a material almost never chosen for peacetime coinage due to its corrosion and die-wear problems, was the only metal available in quantity by 1937.

Surviving examples in any condition above heavily corroded are genuinely scarce. Iron does not forgive eighty years of humidity.