Anyone know the name of these cases please?

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Not sure I have seen one of these early Omega waterproof cases before.
Split stem with press fit glass, then the case snaps compressing the glass further for a better seal.
The crown looks original. Caliber is 17.8.
I bet @Tire-comedon knows what reference this is and what it is called. Any help appreciated.
Cheers, Michael
 
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I had 2 before. Case design later resurrected in the Omega chronograph 125. Never learned a special name for that design...
 
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I was told "press case" but not sure if that is the official name. Coincidentally I just bought this little Piaget and I was wondering the same thing!

 
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The concept makes me think of the first gen Dynamic case idea.

Thanks for that, very nice watches. The dial on that Piaget is really attractive.
 
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I was told "press case" but not sure if that is the official name. Coincidentally I just bought this little Piaget and I was wondering the same thing!


That is a beautiful watch!
 
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That is a beautiful watch!

Thanks Michael! It's a small watch, maybe the size of your Omega but I was also considering a bund styled strap like yours. The Omega looks great on that strap! 😀
 
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I have a couple Bulova from the early 50’s with this style case. Seems to have been a thing.
 
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I had 2 before. Case design later resurrected in the Omega chronograph 125. Never learned a special name for that design...
Same for me, I have a pair of those but don't know any specific name for this type of case....
 
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Same for me, I have a pair of those but don't know any specific name for this type of case....

If you don't know, then it must be a case with no name 😁
End of discussion.
Thank you, Michael
 
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Thanks Michael! It's a small watch, maybe the size of your Omega but I was also considering a bund styled strap like yours. The Omega looks great on that strap! 😀

The straps are around £7 from Cousins in the UK 👍