Hello Tim, from "The Sickle Weapons part III (Tribal Arms Monographs vol 1/n.3)" of Jan Elsen:
"
This type of knife is more a tool than a weapon. In the early literature it is generally described as a bush knife. It has been used for centuries for all sorts of chopping or hacking and, until recently, also as a weapon. Tha basic shape varies little and it is probably more utilitarian than cerimonial....
Miniature versions in bone are found among the Lega and were using during the bwami initiation rites...
Tha Hutu called it urugesho"
Maybe yours example is quite recent with the handle decorated with beads,
but this is only a suggestion
