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Cosc evolution
Looking at my Rolexes, they all are cosc but they are from 3 different era:
- 168000 from 1988
- 16470 from 2011
- 116520 from 2015
I am therefore wondering if the cosc specs have evolved over time and if the 3 of them have the same accuracy.
I have quickly checked the cosc website but could not find anything.
Any idea guys?
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