5 Pesos Plata Boliviana

The Banco Argentino operated out of Paraná, capital of Entre Ríos province, during the chaotic early years of Argentine provincial banking — a period when individual provinces still issued their own currency with minimal federal oversight. The denomination in "Pesos Plata Boliviana" is the telling detail here: Bolivian silver coinage was so prevalent in the northern Argentine provinces during the mid-nineteenth century that it functioned as a de facto standard, and banks denominated paper obligations in it as a matter of commercial practicality rather than political alignment.

PS#1500 is rare enough that documented surviving examples are few, which makes condition assessment difficult to generalize. The bank itself was short-lived, folded into the broader collapse of provincial banking that preceded Argentina's 1890 financial crisis by nearly two decades.