1941 Longines with military connection

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Appreciate all the info - and I'll add mine to the longer thread on the 'tre tacche' if it's appropriate. I opened it up out of curiosity. Not sure why the photos make things appear more 'golden' but the movement is all sliver in tone, same as the stainless case.
Thanks for sharing these additional photos. Your example is a bit earlier than mine (5'965'455 versus 6'072'309).

 
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P.S. I noticed that the balance cocks have different markings. I have observed these different markings on other movements before, but I have yet to keep track of when the transition occurred. Maybe it was around the 5.9-6.0 million serial number mark? I could imagine that it was caliber-specific, and there are likely many exceptions.
 
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Happy New Year to all! Thanks for the reference, @DirtyDozen12 ; you've probably also noticed that your movement holding ring is different too, with 4 tabs, not 3. Bet you're right about the 5.9-6.0 series change. Thanks for the update to all involved; good stuff!
 
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@Warthog Happy new year to you too! I did notice the movement rings with 3 and 4 tabs. Another interesting difference.