1 Real

Banco Argentino operated out of Rosario during the turbulent free-banking period of the Argentine provinces, when dozens of provincial and private banks issued their own paper currency with little federal oversight. The 1 Real denomination places this squarely in the pre-decimal transition years, when both reales and pesos circulated simultaneously and public confidence in private bank paper varied wildly by institution and region.

Rosario-issued private bank notes from this period are genuinely difficult to locate — most provincial free-banking institutions collapsed or were absorbed following the national banking reforms of the 1860s and 1870s, and their paper was largely redeemed, cancelled, or simply lost.