I recently picked this up from an estate sale for $25. It truly is beautiful with its thick radium numbers and a good condition dial. The movement looks beautiful and I'm pretty sure its made in house. The year of production is 1945 and it has a double case with a screw on back. The bumper is pretty effective for such an early automatic. The balance has an incabloc shock protection setting on it which makes it far more versatile and useable for daily wear than before. The strap that is comes on is fairly nice. The hands are blue which is a very nice detail. The movement is crisp and runs very well even after 20 years of no servicing. I am currently selling this watch online elsewhere.
There is beautiful perlage finishing on the outer case.
The case still retains its waterproofness after a few accidental encounters with water. (Obviously the watch was quickly dried than inspected for water damage)
The bumper automatic system has a very crisp winding sound but is only uni directional as I would assume seeing as it is an early automatic.
The first automatic watches came in the late 20's and early 30's and were based on Abraham Louis Perrelet's designs for pocket watches in the 1800's.