Barbuda - Fernando I CR-V, Coruña/Spain mint

Fernando I struck this issue during one of the most turbulent stretches of his reign — the first Fernandine War against Castile had recently concluded, and the Portuguese crown was under acute financial pressure. Billon coinage at this purity was a deliberate debasement, allowing the crown to fund military and administrative costs while nominally maintaining a silver currency. The Coruña mint attribution is notable: Fernando operated mints in Galician territories he briefly controlled during his campaigns, making this piece a direct artifact of Portuguese military overreach into Iberian politics.