What a great and brutal looking spear! Thanks for posting, Martin!
I have a suggestion though, which may clarify the origin of the cool little, stitchless pouches. Maybe one should ask oneself, "Which part of the mammal body produces such pouch-like structures...?"
Hint: They're only found on around 50% of all individuals.
I also really like your wall display! Hope the spear belongs there, because it looks so good with your Sudanese stuff. I'm sure one of our sub-Saharan specialists will drop by and weigh in.
Enjoy and happy New Years, - Thor