Philip Lutolf HP1 – The World’s First Mechanical Wristwatch with Helicoidal Springs
A Swiss mechanical engineer named Philip Lutolf created the world’s first Helicoidal springs powered mechanical watch HP1 in 2008 after conducting several years of research and development, tests and prototyping. He has also created his own label Lutolf Philip to commercialize the production of this wristwatch in strict limited editions.
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