20 Centavos magnetic, larger head, smooth edge

Argentina's shift to nickel-clad steel for this type reflected the Perón government's broader industrial policy of the early 1950s, when nickel imports were being rationed and domestic steel production was being prioritized under the Second Five-Year Plan. The magnetic property is the giveaway — earlier issues in the series are non-magnetic, and the two types are frequently conflated in dealer inventories despite the meaningful metallurgical distinction.