As I already told Tim, I think this club is more a dance club. In my opinion from the Lobi people in Burkina Faso (or perhaps a neighbouring tribe).
It could, of course, also be used as a weapon. I think it's heavy enough for that purpose.
I don't think it's a throwing club, though.
As to throwing clubs, I want to show one I have for quite some time. I don't know where it comes from. I think it's a throwing club, but I'm not sure.
Anyway, it has a peculiar form.
Length is 78,5 cm, weight : 300 grs.