I can't identify the model as you may have guessed, and I have neither the skill or knowledge to open the watch to see the inner movements. What I know is that it is from the Swiss factory hence 'T Swiss T' under the face.
Furthermore I have decyfered that the 'M8' is to date it's production in 1968. But the rest is really unknown to me. I have found a couple of models that look similar, like the sea king from '68 but nothing that is identical.