10 Pesos

Argentina's monetary situation in the early 1960s was deteriorating badly — inflation was running at over 20% annually by 1962, driven by chronic fiscal deficits and the peso's ongoing devaluation. The 10 Peso denomination, which had once represented meaningful purchasing power, was by the mid-1960s worth a fraction of its earlier value, making nickel clad steel a defensible choice over more expensive alloys. The switch away from aluminum bronze for this series reflected how quickly base metal costs could outpace a coin's face value in an unstable economy.

The CJ reference numbers spanning 281–287 indicate die or date varieties documented across the issue's run — collectors working this series closely track subtle differences in the mintmarks and field textures across those years.