The first "solo" point you show looks like someone got almost all finished with it and then something happened and they were unable to get back to it to flake the very tip of the point... Maybe it 's just a trick of the camera or the angle or something but the lines of the rest of it don't seem to match the "slope" of the last 10-15-percent of the point...
Makes ya wonder what happened to the maker, doesn't it? Did he take ill suddenly or maybe he suffered a "surprise attack" perhaps that caused him not to be able to finish it...
Neat finds, tho'!
NorCal Gal