20 Réis - Maria I Dio mint

Portuguese India maintained a separate mint at Goa — the "Dio" attribution here likely reflects a regional circulation distinction rather than a separate facility — operating under viceregal authority largely disconnected from Lisbon's monetary directives. Maria I's reign saw genuine administrative reform attempts in the Estado da India, though by the 1790s the colonial economy was contracting sharply as Portuguese territorial holdings on the subcontinent had been reduced to a handful of enclaves. Copper coinage of this period circulated alongside a chaotic mix of local and competing colonial issues.