20 Bolivianos

Banco Potosí was one of several Bolivian departmental banks authorized under the 1877 banking law, which fragmented note-issuing authority across regional institutions rather than consolidating it in a single national bank. The arrangement reflected Bolivia's political geography as much as its economic logic — Potosí's mining wealth justified local banking infrastructure, but it also meant these notes circulated in a geographically limited zone rather than nationally.

ABNC produced the plates in New York, as they did for most Bolivian departmental bank issues of this period. The series is genuinely scarce; Banco Potosí was wound down well before the 1911 nationalization that absorbed Bolivia's remaining private issuers, cutting the circulation window short.