Cruzado - João IV Porto

João IV reclaimed the Portuguese throne in 1640 after sixty years of Iberian Union under Spanish Habsburg rule, and the reestablishment of an independent Portuguese mint at Porto was a deliberate assertion of restored sovereignty — the city had been a royalist stronghold throughout the Restoration War. The cruzado novo, struck in high-grade silver at a time when the crown was simultaneously funding a grinding conflict against Spain and defending colonial possessions from Dutch encroachment in Brazil and Angola, circulated under extraordinary fiscal pressure.

Porto-struck examples are distinguished from Lisbon issues by mintmark, and the series shows documented die variation across the fifteen-year span of production.