20 Réis - João V (Crown with 4 or 5 Arches; Lisbon and Bahia Mints)

The 20 réis coin from 1729 was minted during the reign of João V, an era often characterized as the height of the Portuguese Empire's wealth due to the intensive extraction of gold from the Brazilian interior. These coins were produced at the Lisbon and Bahia mints to serve the growing commercial needs of the colony, reflecting the administrative efforts to standardize currency across the vast Portuguese territories. The design features the crowned shield of the Portuguese coat of arms, a symbol of royal authority that bridged the divide between the metropole and its richest overseas possession.

The coins from this period were designed to signify the stability and endurance of the House of Braganza. The variations in the crown arches—either four or five—are attributed to the different minting processes and die styles employed between the Lisbon and Bahia facilities. While these pieces were once ubiquitous in the daily transactions of colonial Brazil, they are now valued by numismatists for the tactile connection they offer to the 18th-century transatlantic economy and the shifting aesthetic standards of colonial monetary production.