Freddy what a nice spear rather like the Tuareg all metal spear. 
 Saying a people used just one or two types of spear is a trifle bombastic.  This is often said about the Zulu.  Spears vary in function and a spear blade unless very distinctive, is a rather mature design making attribution just on an ordinary shape without provenance or documented evidence a little tricky.  A book reviewing pan African spear types would be a great publication also a Herculean task and most probably rather expensive.  
Picture Hutchinson & co London 1918.  Okay the caption says Kikuyu but culturally not dissimilar to the Massai who I believe used the same initiation shields symbolising emergence.  Just thought the picture was relevent to the thread.  Tim
