XX Reis - Pedro II Porto mint

The Porto mint's production of copper Reis under Pedro II was itself a concession to emergency — Lisbon's Casa da Moeda could not keep pace with colonial demand, and Porto was authorized to strike copper small change as a stopgap measure during the 1690s. The arrangement was never intended to be permanent, and the Porto facility closed its copper operations before the decade was out.

Dies cut at Porto show measurable inconsistency compared to Lisbon output, a known characteristic across the Gomes listings for this type.