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Breguet

Hi Adam. Thank you for your comments.

 

Mr Roth certainly played a pivotal role in Swiss watchmaking in the the 1980s and early 90s. I am preparing an overview of guilloche dials on watches from the 1970s to the present day, but haven't yet delved too deeply into the operation of the machinery. The 15 or so brands or watchmakers I have been looking at certainly operate the rose engines by hand though.
Regards,
Baruch

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