Chief Sitting Bull arrow head knife. Made to look like obsidian arrow head!!

Chief Sitting Bull arrow head knife. ( not a real knife) Made to look like obsidian arrow head wrapped with white twine, but is not real obsidian. Blade comes in a display box and original shipping box. Back is marked "Chief Sitting Bull". Nice display piece. See photos. Replica encased in felt/wood lined Coffin Case. Dagger approx. 9", case almost 11". Can be hung on wall or stood up on table.