Hi Bruno,
Thanks for your answer, I already thought the figurine was well researched, perhaps with your help, even if I know Sergey too is a Native Americans studious. Yes, I read about the Warrior Societies among the Plains tribes (Cheyenne, Lakota, or Arapahoes for example), so, when I watched this spear, I thought the warrior could be a member, because some particular lances often were a symbol of the Warrior Societies and proudly showed to enemies and fellows as a mark of distinction. But I wanted to be sure of my assumption.
All the best
Marcello