I found this wristwatch a while back in some of my grandfather's things, and I'm curious as to whether anyone might be able to shed light on it. It doesn't appear to have a model name on it, but it looks strikingly similar to images of military ones I've seen- excepting the white dial. Since he was in service during WWII, it would fit with the time period and the fact that I found it with some of his military mementos. So, I have a few questions and I'm hoping you might be able to answer them.
1. Does anyone know what model this is/its age? If it helps, the watch is 30mm wide (32 incl. crown).
2. How might this model's caseback be opened?
3. As far as I know this watch hasn't been serviced since it was originally manufactured (it certainly looks it, anyway). I'm aware that Bulova allows you to send a watch in for service, would they work on this despite its age? Or would I be better off finding someone reputable locally?
Surprisingly, it still runs though it loses about 5 minutes/hr. Other than seeing if it works, I'm afraid to run it lest I tear the internals up.
Thanks in advance,