HELP for ID this congolese knife (n°2)

[LPCA]

Hi, there

Here is a new riddle for me ... surely not for some of you.

Overall length is 58cm. / Blade is 48 cm. / wide max. is 16 cm.

Except the edges, the iron is darkened and was beaten in the small burin.

This blade is strong & heavy.

Who can say which tribe used it? which name if any ? maybe an URL or image can help?.

Would be great....

Louis-Pierre