Zenith S 58 Automatic.
The automatic is not my favorite version, even if it makes more sense than the manual winding one which is not a good thing in a diving watch.
But aesthetically, the manual winding is my favorite. The Cal 120 is a pleasure to admire, and the absence of the date is very much my taste.
But we cannot deny the charm of the S 58 automatic.
Here is one I recently saw, with is patinated dial.
I really like this bezel, thin, elegant, sober.
As for the case back, the font is just superb.
A nice vintage diving watch.