My two cents - I do have a custom made cnc case for 15202 in my hands now as well as legend modified ZF case. These are two completely different cases. Several key differences:
- different mid case construction - holes in the mid case (ZF) vs holes in the large rubber gasket
- correct bezel screw size (accoring to the AP drawings) vs larger screws used by ZF
- better (closer to gen) proportions of bevels on the bezel and mid case
- close to gen thickness (8.1-8.2 mm) vs ZF which is thicker
- different brushing cnc case vs legend modded ZF - cnc case not as fine as legend’s mod to the ZF case
I plan to post a detail info about my franken build later withr photos comparing different parts as well (dials, hands, …)
Finished franken (cnc custom case, gen dial, hands, crown, k2121 and gasket, custom rotor and DW):
cnc case left, modified zf case right - different bezel screw size, different bevels on the bezel and mid case:
Different mid case construction cnc custom vs ZF:
Better “flush” mount and alignment of the case back with the cnc custom case (vs ZF, here it depends on how much you tighten the screws and press the gaskets) and the cnc case feels lighter and slimmer while holding both in hand:
