100 Sucres Banco Sur Americano

The Banco Sur Americano was one of several private Ecuadorian banks authorized to issue notes under the country's plural banking system, which persisted until the 1927 Kemmerer Mission reforms forced centralization and ultimately created the Banco Central del Ecuador. Notes from these smaller regional issuers were effectively swept from circulation during that transition, and most were redeemed and destroyed — survival rates for the Sur Americano series are correspondingly poor.

The American Bank Note Company's New York workshops handled most of Ecuador's private bank printing during this period, a relationship that continued across multiple issuers and denominations through the early 1920s.