COSC Certified Watches

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2021-12-28 04:32:20 - Translate -

Previous blogs discussed chronometers and mentioned that an authenticated luxury watch is a chronometer. So, who certifies these watches and determines whether they are chronometers? The Contrôle Officiel Suisse des Chronomètres (COSC). The COSC Five Swiss areas created the COSC in 1973: Geneva, Bern, Vaud, Neuchâtel, and, Solothurn, together with...

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