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Only two months after the HM3 Frog, it is soon time to unveil MB&F's most radical creation to date… The Horological Machine No4 THUNDERBOLT !

MB&F presented the amazing HM4 engine during Basel Fair in March (image hereunder). 3 years and 311 parts in the making, all created, even the balance wheel and hairspring, specifically for this piece.

Now, on Wednesday July 7th around noon (Geneva time), we will publish all the images and description of this defining HM, which will undoubtedly not leave anyone indifferent…

Before that date, here is the first ever image of the beast…

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