1 Peso Plata

Colombia's Banco de la República turned to the American Bank Note Company for this series during a period when domestic printing infrastructure was not yet equipped for high-security currency production. The ABNC's New York plant handled the bulk of Colombian paper money output through much of the mid-twentieth century, and the relationship was long enough that the plates for several denominations were revised and reused across multiple dated issues without the public ever noticing the continuity.

The "Plata" designation is the telling detail — silver-denominated peso notes were a legal accounting distinction that persisted on Colombian currency well after silver convertibility had become largely theoretical.