Glad you guys like the look of it. It was a bit of an impulse buy so it's good to hear it has a bit of appeal.
No thoughts on an ethnic or regional ID? I've never run across something similar. My resources on spears are slim but a quick glance through Stone, Waffen aus Zentral Afrika, and a few others didn't turn up even a remote match for a spear head of that style. Closest thing I've found is this spear head from the Musée de l'infanterie in France - labeled as Tuareg.