This watch was given to my grandfather, in 1962, on his 25th year with the GM company Saginaw Steering Sear, in Saginaw, Michigan. That's really all I know of its origin. I'm guessing that it was also made in 1962, but I guess it could be earlier.
Several years ago I had the battery replaced but the movement failed shortly after. Recently, I took it into a reputable watch repair, and they rebuilt the movement and cleaned up the case. Of course I should've had pictures taken of the interior, but failed to request this. I'm hoping you can help identify this watch regardless. Thank you very much!