As a knapper, i see them as being repros too. 2 are like a scotsbluff type or maybe an eden type... And the other one looks like it is supposed to be a fluted type point like a clovis or another variety of fluted point. The center piece, if actually stone, looks to be made of alibates which is from the northwest area of texas and the neighboring state. Also with that piece, it doesnt appear to be ground or smooth base. And the flake scars arent exactly like ive seen on ancient examples of that type. With that, as others stated, they could still be collectable to certain people. I for one, collect pieces from some of the best knappers out there, but i like to have them signed too. I etch my pieces with a diamond tip pen, to help prevent people from trying to pass them off as ancient. Also, i want the credit for the pieces i have made!
Id like to know if they are casts or actual stone... Id hang that right up on my wall!!