10 Pesos

Banco del Sur was one of several Colombian departmental banks operating under the 1880 banking law, which permitted private regional institutions to issue their own currency. Pasto, the capital of Nariño in the remote southern highlands near the Ecuadorian border, was effectively isolated from Bogotá's financial infrastructure — these notes functioned as the practical medium of exchange for a region with limited connectivity to the national system.

The ABNC contract for Colombian provincial banks during this period was extensive; many of these southern issuers shared plate architectures and ordering cycles. The 1907 date places this note in the bank's final years, as Colombia's 1909 banking reforms began consolidating or eliminating private emission rights.