Very nice, indeed !
My spear has a simple blade, but notice the small decoration on the base of all three spears (engraved lines).
I haven't seen such intricate blades as yet. I like them a lot.
Roanoa,
You are quite right in saying that these spears are carried as symbols. It's a 'status thing'. The smaller spears are often called 'staff spears'.
The picture of the book also shows some rare blade forms. In Belgium, we sometimes find small spears with such 'exotic' formed spear blades. Often these have beaded shafts. A lot of them were made for the Europeans (as a kind of tourist piece), but not all. In one of my former posts, I showed some beaded pieces :
As far as I can judge from the pictures all these blades look very well forged.