unusual african dagger covered in cowrie shells

[Peter B.]

Originally Posted by Ibrahiim al Balooshi

Here another cowrie shell decorated scabbard. The details at http://ijhssnet.com/journals/Vol_2_...ber_2012/27.pdf are amazing.

The thread is a bit older, but can someone tell me something about the origin of this knife posted by Ibrahiim?
I have a similar one, sold as coming from Uganda, but I have also seen specimens that have been ascribed to the Yoruba (Nigeria).
Does anyone know the link given here completely?