100 Colones Series C

The Series C 100 Colones was issued during a period of relative monetary stability in Costa Rica, with the colón having been pegged to the US dollar at 6.62 per dollar since 1961 — a rate that held, with increasing strain, until the 1970s. Thomas De La Rue's involvement was consistent across multiple Central American issuers during this decade, and the print quality reflects their standard intaglio work of the period.

Watermark-only security was already considered minimal by the mid-1960s, even for regional issuers. Worth noting for collectors: the Series C designation distinguishes this from overlapping emission periods, and date-range specimens within P#234 can vary in signature combinations reflecting changes in bank presidency and finance ministry appointments.