10 Centavos Fuertes

The Banco de Londres y Río de la Plata was a British-owned institution operating under Argentine provincial charters, and its Rosario branch issued its own notes distinct from the Buenos Aires house — a common arrangement in a country where provincial banking authority still outweighed federal coordination in the early 1870s. The "Fuertes" denomination was a holdover designation distinguishing notes tied to hard currency equivalents from the debased paper pesos that had plagued the Río de la Plata region for decades.

PS prefix in the Pick system signals a privately chartered bank rather than a state issuer. The 1874 date places this squarely before the 1876 financial crisis that forced the closure or suspension of several provincial branches of foreign banks operating in Argentina.