20 Sucres

The P#115 series ran for over two decades under the Banco Central del Ecuador, a span that covered multiple governments, the 1970s oil boom, and the inflationary pressures that followed. Ecuador's sucre held reasonably well through the early 1970s when petroleum revenues were strong, but by the late issues within this series the currency was already beginning the long slide that would accelerate sharply in the 1980s.

Thomas De La Rue held the Ecuadorian printing contract continuously across this period, which accounts for the design's unusual longevity — changing printers mid-series was costly, and the central bank saw little commercial reason to commission new artwork while the plate remained serviceable.