1920-1930 omega help

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Hi,

I recently purchased this vintage WW era Omega from Ebay and was wondering if anyone has any deeper knowledge about this one, couldn't find any similar ones with a simple google search?
Also I'm worried about the radium, could I bring this to a Omega Service Centre for them to apply some non radioactive substitute?
 
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The watch looks authentic. Movement is a cal. 23.7

I would keep the watch as is. Radium is not dangerous for you as long as you don´t open the watch completely (inhale radium-dust).
Omega would ask hefty money for the service and you will lose the originality of the watch.
If you intend to wear the watch have it serviced by a competent independent watchmaker. If not, keep it as is...
 
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Hello, are there some inscriptions inside (or outside) the caseback? If yes pictures would help determine if the case is Omega factory or a distributor one.
 
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Hello, are there some inscriptions inside (or outside) the caseback? If yes pictures would help determine if the case is Omega factory or a distributor one.
Hi, sorry for late reply but caseback says Fab Suisse
 
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Hi, sorry for late reply but caseback says Fab Suisse
No serial number inside or outside the case?
Close but not exactly the same as this model, found in a 1925 catalog of mine (the case is named 'Tortue carrée', square tortoise in French
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