Zulu or further north?

[Tim Simmons]

I purchased this today from a Zulu material collector. He states this piece as Zulu. To me it looks more like work from further north like pieces from what is today Malawi or even up to the Ilemi triangle? I wonder what others might think? The item is heavy, the wood and ivory are built up on a metal rod most likely iron. The ivory does not have matrix of lines as in elephant ivory so I presueme it to be hippo ivory.