Vintage Diver ID Help: Titus Calypsomatic or Triton?

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Good afternoon. I purchased a cool vintage diver a while ago and am very happy with it. I polished the crystal and the dial looks amazing.
The only problem is the crown. It is obviously a replacement. I think there should be a screw on crown. Does anybody know what kind of crown would fit on it or point me in the right direction? Would be much appreciated. Here are some photos;
What do you guys think of the watch? I am not familiar with the brand

 
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Beautiful watch and a great bracelet also!

Edit: The case reminds me of a Titus Calypsomatic/Technos Skydiver.
Edited:
 
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😀That’s nice! Indeed, it looks like the one on the right. Will be a challenge to find one