50 Centavos Oro Legal

Banco de Caldas was a departmental bank based in Manizales, operating during Colombia's era of free banking before the Banco de la República's consolidation of note-issuing authority in 1923. The American Bank Note Company's involvement here is unremarkable by regional standards — ABNC printed for dozens of Colombian departmental and private banks during this period — but the denomination itself is worth noting. Fractional "oro legal" notes were issued to satisfy small-transaction demand that coin supply chronically failed to meet in the interior departments.

The "oro legal" designation was a legal fiction by the time most of these circulated; convertibility was rarely enforced at face value.