Following your discussions...
I was very interested your statement about ARF bracelet and I have enough fund to run a test. Today I just acquired a brand new ARF 126610 bracelet from ctime. Here is the finding regarding end pieces:
1) The middle part of the end piece, both front (photo not show) and the back extending out: VSF<GEN<ARF. ARF is too much extend and too obvious fake at some situations.
2) VSF middle part has noticeable low profile than GEN but still not obvious. ARF is also not obvious especially at low light.
3) The real problem of ARF is, it won't fit GEN, neither fit VSF case. It looks like spring bar hole is not drilled at the right position (too much toward back side). Or the slot has some issue. Maybe it fit ARF cases but I have a GEN 3235 movement to play with, who cares about ARF case (which will not fit any GEN movement).
4) ARF link screw holes, polishing, and all the rest parts are much better than VSF and almost identical to GEN.
Colclustion:
1) They are all fake, with this or that kind of issues, none is perfect
2) Stay with VSF, ARF won't fit your VSF case (Or Gen )