There is one original watercolour within this frame. Title is as follows
Namantaza. A woman of the Amaponda tribe.

Unsigned

The original has been used in Angas's The Kafirs Illustrated. The title of the watercolour is the same but the plates differ;
Namantaza, a woman of the Amaponda tribe.
Wood Engraving
Plate reversed. Third hut missing.
Engraver G K Childs