1 Peso

Banco de Occidente was one of several Colombian regional banks operating under the 1880 banking law that permitted private note issue, a system that survived well into the twentieth century before the Banco de la República absorbed the privilege following its establishment in 1923. Waterlow & Sons handled a considerable volume of Latin American commercial bank work during this period, and the Occidente contract was part of that broader pattern rather than anything exceptional.

The extended dating range — 1900 to 1921 — suggests the same printed stock was signed and dated on demand over two decades, a common practice for low-denomination notes from smaller regional issuers with modest circulation needs.