1 Pound

By 1987, Sudan was in the grip of severe fiscal stress — the country had accumulated one of the largest external debt burdens in sub-Saharan Africa, and the central bank was under pressure to manage currency supply against chronic shortages of hard currency. Thomas De La Rue continued printing Sudanese notes through this period despite the instability, a contractual relationship that stretched back to independence-era issues.

P#39 is the last 1 Pound type before Sudan's accelerating inflation made the denomination effectively worthless within a few years. The Islamic-oriented monetary reforms of 1990–92 soon swept it out entirely.