5 Pounds

The Bank of Sudan's second series, introduced in 1981, coincided with a period of sharp economic deterioration in the country — the IMF had suspended drawings on Sudan's credit tranche in 1979 over arrears, and by the early 1980s the Sudanese pound was under sustained devaluation pressure. This 5 Pounds note was printed by Thomas De La Rue in London throughout the series run, with the watermark serving as the primary security feature — relatively modest for the period, though consistent with earlier Sudanese issues from the same printer.

The series was replaced by 1983, when Nimeiry's introduction of Islamic law under the September Laws prompted a broader monetary restructuring that would eventually phase out the pound in favor of the dinar.