
What I think from your only picture, is that your watch is from the early 40ies.
And that it, of course, houses a manual movement.
But the inside of your case back, and the movement will give you more informatons, about the reference of the Calibre, the movement number ( which will help to date in a more precise way ).
Maybe Blomman, who is our Catalog Man, has a scan of your watch?
Best,
Nicolas
The closes I have in paper form is this ad from the mid 50's.
To know the movment number would help dating your watch.
Best
Blomman