50 Pesos

The Confederación Argentina was a short-lived political entity — the result of the 1852 split between Buenos Aires province and the remaining Argentine confederation, which established its capital at Paraná, Entre Ríos. Notes issued under the Gobierno Nacional during this period were printed locally at Paraná, an unusual circumstance for the era; most Argentine paper issues of the 1850s were contracted to European or North American printers. Local production meant uneven quality and limited anti-counterfeiting capability, hence the reliance on handstamps as the primary security measure.

The confederation was dissolved in 1861 following the Battle of Pavón, which effectively ended the Paraná government. Notes of this series had a correspondingly brief circulation window.