Help me identify this 1950’s Longines?

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I can’t quite tell what model nor what movement it might have. When I receive it, I will open it up and find out but I’m wondering if anyone knows or has a best guess?
 
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Alternatively, a 12.68ZS... or rather a cal.23 ZS
Like this one
Edited:
 
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Actually 22AS is an automatic, I wasn’t paying attention this one probably isn’t.
 
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I have a similar one. It's likely a ref. 6694 with 23ZS movement. There's 2 dial variants: with or without the crosshair.