25 Pesos

Banco de la Unión was one of several private commercial banks operating in Colombia under the 1880 banking law, which permitted note-issuing privileges without a central bank to regulate them. The result was a fragmented, competitive currency environment — multiple banks printing their own pesos simultaneously, with public confidence varying sharply by region and by issuer.

The American Bank Note Company's involvement was typical for Latin American private banks of this period seeking to discourage counterfeiting through intaglio printing unavailable domestically. Whether notes of this series actually reached wide circulation before Colombia's banking reforms of the early 1890s curtailed private issuance is genuinely unclear from surviving records.