There should be no need for a v1, v2, v3 requirement when laser scanning and CNC'ing a Rolex mid-case.
I can't think of a simpler object that I have had made in my line of work.
Bezel ring and caseback is a tiny bit more complex to absolutely nail ......but there's no excuse for not getting the mid-case and CGs right with a CNC set-up.
There's an initial tooling cost/investment ....but for $1500 a pop, there is no excuse for anything less than true 1:1.
I think Phong's 16610 is true 1:1 but his vintage stuff is probably a rep of a rep of a rep that he "hand-finishes" using pictures (not actual side by side gen)