This watch is made by Wotag Trading Company Inc using Universal Geneve Caliber UG D320
Military style dial but has no Second hand, a bit odd for a Military Style watch.
As marking it is a hand wind UG D 320 one jewel, could it be Universal Geneve movement.
Strip down will follows
All parts strip and in working order, just some rust on screws and few levers, Case needs buffing and polishing and glass will be replace. Dial I will leave it as is, it is very expensive to get the dial redo.
Spring okay, at first I though it was broken. After removing it from the barrel to take measurements, I found it in good order.
The spring in a close up.
Assemble and lubricated movement under test.
Dial installed and checking time for accuracy.