20 Pesos

The Banco Nacional de las Provincias Unidas del Río de la Plata was the second attempt at a national bank in Argentina, established in 1826 under Bernardino Rivadavia's short-lived centralist government. By the time this note was issued, the bank was already operating under severe political pressure — Rivadavia had resigned, the unitarist project had collapsed, and the institution was effectively running on borrowed legitimacy under a federalist Buenos Aires provincial government that had never fully endorsed it. The bank was liquidated in 1836, making late-dated examples from this series particularly scarce.