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A. Lange & Söhne

Yes, I could've sworn I remembered a post on this forum whereby someone took a photo of the mechanism

 

I vaguely remember it, but it involves a gear on the mainspring with a missing tooth on it allowing a lever to fall in when unwound. I can't remember how the seconds hand is coupled. If I manage to find it I'll link it here.
Regards,
skyeriding

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