8 Reales

La Rioja's mint at Rioja operated during one of the most fractured periods in Argentine monetary history, when provincial mints proliferated precisely because centralized federal authority had collapsed. The Confederation's inability to enforce a unified coinage standard through the 1830s left individual provinces issuing their own silver on whatever schedule local silver supplies permitted.

KM#8 is scarce in any grade — the mint's output was modest and the province small. Most surviving examples show heavy circulation wear, consistent with coins pressed into use across an economy that was chronically short of hard money.