196 x 247 mm. Half length seated studio portrait of a Sudanese warrior, his arm resting in an arm rest. According to the caption this is a portrait of Osman Digna (c 1840-1926), the Sudanese leader who joined the Mahdist cause in 1883 after imprisonment by the British and Egyptians for particiating in the slave trade. He was active in the Sudan until the decisive defeat of Mahdism at Omdurman in 1898; after this battle he fled to the Red Sea hills.