20 Pesos

The Banco de Concepción was one of several Chilean regional banks that gained note-issuing rights under the 1860 banking law, which deliberately fragmented currency authority across provincial institutions rather than centralizing it. By the 1880s, ABNC had become the de facto printer for most of these smaller Chilean issuers — the plates were competent, the paper reliable, and the security features difficult to replicate locally.

Concepción's banking sector took a hard blow during the 1879–1884 War of the Pacific, when wartime fiscal pressure pushed the government toward forced inconvertibility of paper notes. This 1883 issue lands squarely in that period of suspended specie payments.