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Vacheron Constantin

Lemania

 

The Lemania movement was also used in the Chrono Perpetual and was also used by Patek I believe in their 3970.
I'm not sure if VC used it in the newer version of their platinum Chrono Perpetual.
VC claims that they are slowly moving to in-house movements in all their watches, likely over the next few years.
To my knowledge, they never used an ETA movement.
JB

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