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Pocket watch IWC lost 9 minutes

nuno

Registered User
May 1, 2011
197
10
18
Country
Hello my friends,
I clean my pocket watch IWC but is lost 9 minutes in 24 hours. Please have any afination in balance or hairspring? Or the clean is not perfect?

Thanks,
Nuno

IMG_20220126_143315.jpg
 

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