100 Bolivianos

Banco Potosí was one of several Bolivian departmental banks authorized to issue private banknotes under the 1871 banking law, which deliberately decentralized note issue rather than establishing a single national bank. The arrangement lasted until the Banco de la Nación Boliviana absorbed these functions in the early twentieth century, rendering all departmental issues obsolete and subject to redemption — a process that was uneven at best, leaving many notes unredeemed and ultimately destroyed.

The American Bank Note Company engraved and printed the entire Banco Potosí series. Potosí's identity as the city that once supplied most of the Spanish Empire's silver gives this denomination a certain irony — paper obligations drawn on a place historically synonymous with hard money.