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Introducing – Henri Grandjean & Cie Unveils the Magician Atrivm Green Sapphire and Atrivm Red Sapphire
Rebecca Doulton via Monochrome Watches

Henri Grandjean (1803-1879) was a master watchmaker from Le Locle, renowned for his precision marine chronometers and for his pioneering role in Swiss chronometry. The name was recently revived by ent
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