20 Pounds

The 1983 series marked Sudan's last fully secular banknote issue before President Nimeiry's September Laws imposed Islamic banking principles on the financial system later that year — an abrupt shift that forced a rapid redesign of the entire currency to remove imagery deemed incompatible with Sharia. Notes from this series consequently had an unusually short window of legitimate circulation before being phased out during the transition to the Bank of Sudan's subsequent Islamic-compliant issues.

De La Rue's involvement with Sudanese currency dated back to the earliest post-independence issues, making this among the final notes in that long printing relationship before regional political pressures began redirecting contracts.