A Hausa arm dagger, 19c ? with a vintage leather 'cover'

[katana]

Bought this very cheaply .....a nice old Hausa dagger, spatula ended with nice brass work. What is unusual is the 'vintage' sheath/cover...it is well made and has 'mimicked' the embossed design of the original broken/damaged sheath.
But whether this knife was treasured by the tribal owner/family and had the sheath made to protect the original remaining sheath/knife is unknown . If it was....it makes you wonder why it was preserved in its present state