1 Pound

By 1981, Sudan's economy was under severe strain — oil revenue projections had not materialized as expected, and foreign debt was mounting rapidly. The Bank of Sudan was still contracting Thomas De La Rue for its currency production during this period, a relationship that stretched back to the earliest post-independence issues and reflected the limited domestic printing infrastructure available to the government.

Pick 18 belongs to a transitional phase before Sudan's Islamic banking reforms of 1984 fundamentally restructured the currency system, eventually eliminating interest-bearing instruments and renaming the pound the dinar.