50 Centavos

These years bracket one of Argentina's most turbulent political stretches — the tail end of the Lanusse military government, the brief return of Perón in 1973, his death in office the following year, and Isabel Perón's increasingly chaotic presidency before the 1976 coup. Coinage continued largely uninterrupted through all of it, which is itself telling about the bureaucratic inertia of the Casa de Moneda during political upheaval.

Inflation was already accelerating badly by the mid-1970s, which would eventually render this denomination obsolete well before the 1983 peso reform arrived to sweep away the entire series.