SJX[Purist]
8540
Chopard and Zenith are the only non-ETA
Of the brands listed, Chopard is 100% in-house and
non-ETA, so is Zenith. Ebel and UN do use ETA ebauches, but some of their
movements are in-house as well. Of course officially a good number of Omega
movements are "in-house" too.
- SJX