I do not really like to use the term 'rare'. But i think it is appropriate in this case.
I found this Zenith diver with the 2542 PC movement.
On some french forum i read that it was made in Besancon, France in the 60s. And not in Switzerland.
Or atleast, some Zeniths from users on that forum that are very similar to this one. Same case, hands, crown and movement. Only my dial is different.
I also wonder what dial colour this used to be. It seem to have faded a bit intolight blue/grey.
Has anybody ever seen one of these or has more info about it?
And here is one similar to it but with different dial. I also found the same example with the 4 pointed star logo as i have on mine.