1 Peso Fuerte

Entre Ríos province issued its own currency in 1876 under a quasi-autonomous financial arrangement that made the provincial treasury — not a bank — the direct issuing authority. This was a politically charged decision: Argentina's national government had been pushing to centralize monetary control since the 1860s, and several provinces resisted by continuing to issue their own paper through treasury instruments rather than chartered banks, which were subject to federal oversight.

The PS prefix in the Pick catalog places this firmly in the "Obsolete South America" series. Survival rate is low — provincial treasury notes from this period were redeemed and destroyed as federal consolidation advanced through the late 1870s and 1880s.