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Horological Meandering

It now sounds like a "windmill-regulation", together with the second photo,

 

utilizing air drag force on continuous energy flow from the mainspring, which would be super cool. In that case, my guess is it behaves like the Seiko's glide-wheel in Spring Drive where there is electromagnetic braking instead.
If this is the case, the motion of the second hand of this movement would also be continuous.

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