You have a gem there! That Wittnauer is really a lovely piece, and I like the transistor symbol on the dial. Reminds me of when I was a kid in the sixties, and having a “transistor radio” was a Cool Thing. I see that the drive mechanism is very similar to the Luch electromechanicals. On a related note, one of my Luch watches is engraved on the back too... in Russian, so I have no idea what it says; but yeah, every one of our watches has a story.