40 Centésimos Fuertes

The Banco de la Província de Buenos Ayres occupied a peculiar position in Argentine monetary history — it was technically a provincial institution, but for much of the mid-nineteenth century it functioned as the dominant currency-issuing body in the region, with its notes circulating far beyond provincial borders. The "fuertes" denomination system distinguished these issues from the heavily inflated paper pesos moneda corriente then flooding the market; one fuerte was nominally equivalent to twenty-five pesos corrientes.

The American Bank Note Company had been printing for Buenos Aires since the early 1860s, and by 1869 the relationship was well established. ABNC's New York workshops handled the intaglio work; the notes were then shipped south for issue.