50 Pesos

The Confederación Argentina operated in direct political opposition to the Buenos Aires provincial government throughout the 1850s, maintaining its own capital at Paraná in Entre Ríos province after Buenos Aires refused to ratify the 1853 constitution. This note is a product of that separation — issued by a treasury ministry that controlled the interior provinces but was perpetually short of hard currency and dependent on customs revenue from the Rosario route to fund its administration.

Domestic printing at Paraná rather than a European security printer reflects both the Confederation's limited finances and the logistical reality of operating a government hundreds of kilometers from any established press. The quality of locally produced notes from this period is consequently uneven.

The Confederation was dissolved following the Battle of Pavón in 1861.