Spanish Eight-Reale Silver Coin (Pillar Dollar)

Timeline

1. 1600–1732Potosí, Lima · PotosíSilver mining at Potosí and elsewhere in the Americas enabled Spain to mint eight-reale coins in Peru, Mexico, and other regions; early designs featured a cross and shield, entering global circulation networks via the Manila galleons and European merchant ships.
2. 1732–1772Mexico City · Mexico CityIn 1732 the Mexico City mint first adopted the design of twin pillars flanking a globe of the world, with a ribbon entwined around the pillars inscribed 'PLVS VLTRA' (more beyond); this pillar-dollar design quickly spread to all Spanish American mints and became the most recognizable Spanish silver coin.
3. 1567–1800Guangzhou, Zhangzhou, Macau · GuangdongVia the Manila–Acapulco route and European merchant ships, pillar dollars flowed into China in large quantities in exchange for silk, porcelain, and tea; since the Ming and Qing taxed in silver taels, Spanish silver coins became the de facto international settlement currency, known among the Chinese as 'benyang' and 'fanyin.'
4. 1772–1821Madrid and Spanish American mints · SpainIn 1772 Charles III introduced portrait silver coins, and pillar-dollar minting gradually ceased; after the Latin American wars of independence the Spanish colonial minting system collapsed, and pillar dollars were replaced by new silver coins such as the Mexican eagle dollar, though their influence as a medium of global trade persisted into modern monetary systems.