Five-inch sextant, in a fitted keystone box, by Ramsden of London, c. 1790

Cast brass sculpture in form of a gunboat with figures of men at either end and birds in the rigging, in the style of a goldweight used for valuing gold-dust: West Africa, Ghana, Asante, late 19th-early 20th century

Weight of brass cast in form of leopard seizing porcupine, for valuing gold-dust: West Africa, Ghana, Asante, late 19th century

Penannular bracelet of cast brass with corded and spiral ornament in low relief and a row of projections resembling broad-headed nails round perimeter: Western Africa, Lake Chad, Buduma, early 20th century

Penannular bracelet of cast brass with corded and spiral ornament in low relief and a row of projections resembling broad-headed nails round perimeter: Western Africa, Lake Chad, Buduma, early 20th century

Diamond-shaped works locomotive plate of cast brass with four mounting holes, marked 'Dübs & Co. No. 3516 Glasgow Locomotive Works, 1897'