Would any of you guys be able to help me? I have been left a Eterna ladies wrist watch by a family member and was wondering if anyone could help me date it? I think it is pre war, it has a pocket watch style face and back (both can be opened, with the face hinge on the left). The back is decorative. There is numbers inside the back of the watch 58032 and under that 410. I will try and upload a picture?