1/2 Real Plata Boliviana

Otero y Cía. was a private commercial house in Córdoba, not a bank in any formal sense — this fractional note was issued to address the chronic shortage of small-denomination coin that plagued Argentine interior provinces throughout the 1860s. Provincial governments and merchant firms alike stepped into the vacuum left by an inadequate national coinage supply, and these quasi-private emissions circulated on the strength of the issuer's local commercial reputation alone.

The PS prefix in the Pick catalogue places it firmly in the South American private and merchant issues section — a category that remains poorly documented, and where surviving examples are genuinely rare.