50 Centavos

The Banco de Londres y Río de la Plata was the Argentine branch of the London and River Plate Bank, a British overseas institution that opened in Buenos Aires in 1862 and expanded to Rosario shortly after. Provincial note-issuing by foreign commercial banks was a live controversy in Argentina through the 1860s — the national government repeatedly attempted to consolidate monetary authority, with limited success. This note predates the 1867 Conversion Office reforms, which effectively curtailed private banco emission in Buenos Aires province, though Rosario operations had their own regulatory timeline.

The Rosario branch issues are considerably scarcer than Buenos Aires equivalents from the same institution.