Several manufacturers made that style of watch in the 1930s. I don't think you'll find much more information on it.

Something doesn't add up here. The case is 200k and the movement is 26k?

Usually, the movement number is HIGHER than the case number.

SWISS T would indicate tritium, which wasn't commonly used until the 1960s.

So no, it would not be original to the watch.

I don't have any specific information on that model, sorry.

Looks like a nice example with matching numbers.

Looks like an early Liscica powered Reverso. Probably circa 1932/33.

No normal parts house will have these. Let me see what I have, I may have some cal 412 parts.

Do you have a photo of the existing center wheel?

You will have to shrink the size of your photos with an image editor or post a link to them.

It looks like a fake, unfortunately. The movement finish looks Chinese.

It corresponds to a 1965 movement manufacture date so it is plausible.