Denomination: 1 Reales, silver
Reign: Carolus IV, Spain
Spain’s monetary system was so well accepted throughout the world that it became the trade currency of the day. There were several public and private mints in Spain until Philip V, the first Bourbon King of Spain, decided in the 18th century to make minting coinage a State monopoly. The National mint in Potosi, Bolivia opened in 1572. It was from this mint that most of the silver coins shipped to the Old World were minted.