20 Réis - Maria I and Pedro III (Low and High Crowns; Lisbon)

The 20 Réis coin minted in 1778 stands as a testament to the dual sovereignty of Maria I and her consort, Pedro III, who governed the Portuguese Empire, including the colony of Brazil. This period represented a complex transition in power following the death of King José I, and the coinage was produced at the Lisbon mint to circulate throughout the vast colonial territories. The design features the jugate portraits of the monarchs, a stylistic choice intended to signify the legitimacy and unity of their joint rule during a time of administrative reform and economic restructuring.

The distinction between the 'Low Crown' and 'High Crown' varieties reflects the evolving engraving standards of the era, as die makers refined the portrayal of royal regalia on these small copper denominations. These coins were produced in significant quantities to facilitate daily commerce in Brazil, where small-denomination currency was essential for the growing internal market. They remain valued by numismatists today as tangible links to the pre-revolutionary colonial era and the unique constitutional arrangement of the Portuguese throne under Maria I.