5 Pesos Overprint on 500 Pesos

Argentina's chronic inflation by the late 1960s had rendered high-denomination notes effectively worthless for everyday transactions, prompting the Banco Central to authorize a temporary fix rather than commission an entirely new print run. The existing stock of 500 Pesos notes was overprinted at the Casa de Moneda with the new face value of 5 Pesos — a ratio reflecting a 100:1 monetary restructuring under the peso moneda nacional to peso ley 18.188 conversion, which took effect in January 1970.

The overprint solution was a stopgap while replacement notes entered production. Finding an example where the overprint registers cleanly is not trivial; misaligned applications were common in this run.