100 Pesos

The Banco y Casa de Moneda de la Provincia de Buenos Aires was one of the more unusual hybrid institutions in South American banking history — combining mint operations with paper money issuance under provincial rather than national authority. In 1858, Buenos Aires was still a separate state from the Argentine Confederation, having seceded in 1852 following Urquiza's defeat of Rosas at Caseros. These notes circulated in a polity that maintained its own customs revenue, its own foreign relations, and its own monetary system entirely independent of the interior provinces.

High-denomination provincial paper from this period rarely survived in quantity; the political reunification of 1861 and subsequent monetary reforms rendered much of it obsolete quickly.