3 African daggers for ID

[thinreadline]

I assume these are Western Sahel or thereabouts .... shown to me by an old school friend and according to family tradition , brought back by an uncle
in the 1950s when he was in the merchant navy . The human faced dagger grip I have not encountered before. .... it appears to have been fashioned from an old carving knife . Your comments would be valued thank you.