Take for example...daily screw and unscrew the crown for a rolex 6694, these crown/tube would last approx. 2-3 years. The 6694 engine is a tough work horse thats need little maintenance for the past 30 years or so.....
Which then boils down to the question; you want 'which one' to 'go' sooner or later
Yup, I said ...take for example...lah
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