I have often suggested that Sudan had strong trading affiliations with India. There seems to be a number of Indo-Persian inspired weapons in the Madhist armoury during the uprising. Or perhaps some Indian muslims joined the Madhist 'cause' .... Although the hilt seems to be of recent manufacture (AFAIK brass Tulwar hilts tend to be dated late 19th C onwards) The idea of a 'genuine' Tulwar hilted Kaskara/Takouba of the Madhist period seems a distinct possibillty .....well to me anyway
Regards David