2 Reales

The Casa de Moneda de Buenos Aires operated during a period when the Argentine Confederation and the State of Buenos Aires were effectively two separate political entities — Buenos Aires had seceded from the Confederation in 1852 following the Battle of Caseros. These copper issues circulated within that breakaway provincial economy, not as national currency but as a local stopgap during the monetary instability that followed Rosas's fall. The multiple CJ varieties across just four years reflect frequent die changes, likely driven by the mint's limited infrastructure rather than any deliberate redesign program.