ID of African (?) long spear point

[Kasper]

Dear group / fellow collectors,

I recently at a local auction found this very long spear point, which I guess is of African origin. I am not familiar with African arms and therefore would be very happy for any information about the possible origin and age.

Full length: 79 cm
Socket length: 16 cm
Blade length: 63 cm

There is an interesting detail/reinforcement/structure at the beginning of the blade.

Please see the attached photos

Best regards

Kasper