blomman Mr Blue
38586
Great review, Nicolas!
The mystery dial is a bit of a mystery....
Not sure how many different versions existed but for sure a lot of them!
They were at least in the catalog between 1957 - 1965.
Here are a few scans from my archive:
1957:
Here is the wife's but with black dial.
And the co-signed case.
1957:
Here is mine, but with different lugs than in the scan above.
1965:
Best
Blomman