50 Pesos Overprint on 5 000 Pesos

Argentina's chronic inflation required a currency reform in 1969 — the Ley 18.188 converted old pesos moneda nacional to new pesos argentinos at a rate of 100:1, effectively lopping two zeros off the denomination structure. Rather than print an entirely new series immediately, the Casa de Moneda applied overprints to existing high-denomination stock. This note is a direct product of that stopgap: a 5,000-peso note restruck as 50 pesos argentinos.

The overprint program was short-lived. By 1971 a dedicated replacement series was sufficiently in production to phase out the converted notes, limiting their window of actual circulation to roughly two years.