This is a genuine vs. replica comparison review. In the picture below, all three are Tudor Pelagos M2543 models. The one on the far left is authentic, the one in the middle is from M+ factory, and the one on the far right is from ZF factory.
In the picture below, the one on the right is a high-quality replica from M+ factory. Compared with the authentic version, it looks truly 1:1. The case diameter of the M+ replica is 43mm, the same as the genuine one. The case thickness is about 14.3mm.
The bezel markers on ZF look slightly thinner than the M+ and genuine.
Look at the holes on the clasp. The holes on the far right one (ZF) are a bit too small. The filled luminescent material is not inside the corresponding holes.
Inside the clasp, the structure on M+ is exactly the same as the genuine.
Regarding the luminescence effect, the far right one (ZF) is not as bright as the middle one (M+).
Conclusion
M+ is a very good factory. When it comes to high quality replica Tudor watches, they get many details better than ZF. Apart from Tudor, M+ also produces excellent replicas of Bell & Ross and some IWC Mark watches.