In a german book,
Waffen aus Zentral-Afrika (Weapons from Central Africa) from the Etnografic Museum in Frankfurt am Main, I found two drawings with similar spears.
I hope this answers your question, Tim. The books, I quoted, are unfortunately not published in english (only in german, dutch and french). They are all not easily obtainable. If you can get them, don't hesitate. They are a great help for identifying your congolese weapons. Freddy
