African dagger. Completely stumped

[blue lander]

Another one of these knives went up for auction, so I bought it. The seller says it's from the Maghreb, but who knows how he came to that attribution. That would sync up with it being a dervish knife, though.

It more or less looks the same as the one I have, I'll compare the dimensions when it arrives in the mail. I assume the grip's hamster bone like the last one. Judging from how poorly carved it is, it must have been made back when it wasn't a very valuable material.