But the style is really Seventies...
Don't know this model.
Blomman, Clavi?
This nice dress watch is a reference 1913, from the thin watches line in the 1962 catalog:
(the famous ultrathin ref 1925 is actually on the opposite page of the catalog)
I like the 'no lugs' feature a lot
I have too many documents...
That's the one I was looking for!
Thank you, Clavi!
FYI: The Ref 1913 was still in the catalouge in 1967:

The 1967 catalogue is very interesting - inside is both the Geomatic and the Polaris!
Best
Blomman


My guess would be 1965-66, but I still have too little reference data to say that for sure...
It's definetely 1960 or later (the JL logo on the dial).
The hidden lugs make me think of this one from 1957:

The diagonal cross mark made me think of this one from 1958:

The JLC logo at 3 o'clock made me think of this one from 1960 French ref 9 R.2:

So, a qualified guess would be early-mid 1960's.
Best
Blomman