20 Soles

The Banco Nacional del Perú operated from Lima, but this Iquique branch note represents a peculiar chapter: Iquique was a Peruvian city until Chile seized it during the War of the Pacific (1879–1884), meaning notes issued from that office were rendered politically stranded almost immediately. The branch itself ceased to function as a Peruvian institution once Chilean forces occupied the Tarapacá region in late 1879.

ABNC produced the plates in New York well before the war, when Iquique was the center of Peru's nitrate export economy — which is precisely why a branch bank existed there at all.