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Vacheron Constantin

Further info

 

from VC..
The Quai de I’Ile 4500S timepieces were upgraded to a bar 10 water reistancy in 2017.
The water resistance level is not engraved on the case back of the timepieces. Therefore, you will need to make sure the case back is engraved "4500S/1" to confrim the timepiece does have the bar 10 water resistance.

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