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Posted

Hello.  I have a longines cal 37.9 and I bought the wrong crystal, based on what I've seen.  The first photo is on the friction fit case front, and the second is of the lip on the back that holds the crystal. The diameter of the opening is 39mm (photo 4), but the diameter of the bottom lip is 40.6 (photo 3).

 

I bought a 40.6 and it will not fit.  

 

Can someone please confirm I should buy a 39mm and if you can tell, provide what kind of crystal would be best?  I'd greatly appreciate it.  

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Posted
7 minutes ago, AndyGSi said:

What was the size and shape of the crystal you removed?

Sadly this watch came to me without the crystal, so I am flying a bit blind.

Posted

That's just the Order Number. If there's no other numbers then it could be a case of trial and error to find the right one.

What does the case look like and what size if the opening?

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