1 Peso Plata Corriente Boliviana

Banco de San Juan was a provincial Argentine institution, and this note — denominated in Bolivian silver pesos rather than the local moneda corriente or a national standard — reflects how thoroughly Bolivian coinage dominated trade in the Andean provinces during the 1860s. Cuyo's commercial ties ran south and west, not east toward Buenos Aires, and issuers priced paper accordingly.

PS#1866 is genuinely rare. Provincial Argentine bank paper from this period had short operational windows, and San Juan's banking infrastructure was repeatedly disrupted by political instability following the Mitre era.