This item is essentially in knife form, modern and well made, but IMO too much so to be regarded souvenir. The blade is unfullered sheet steel without edges. (no picture unfortunately).
To me it seems West African, but it seems similar figure popularity of this kind filters into Congo as well and likely even further.
The curious design on the scabbard and the inlay of gold metal wire into wood (mahogany?) might be to particular tribal group?
Really need help from you guys specializing in African stuff.