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When we last met with master watchmaker Martin Braun, he had successfully launched his new brand Antoine Martin, developed a remarkably precise in-house Calibre 39 with two patented technologies, and was nominated by the prestigious Grand Prix d’Horlogerie de Genève for his Tourbillon Perpetual Calendar (Tourbillon Quantième Perpétuel).
For 2013, Antoine Martin slows down. Literally.
The latest in-house Calibre 36 is the first and only movement to operate at a frequency of 7,200 beats per hour, or just one hertz. In other words, the massive balance makes just two oscillations per second. The result is a perfectly stable rate and, combined with some design modifications, the movement yields maximum run time and efficiency with a 92-hour power reserve. This sublime movement is built to the highest level of watchmaking and housed in a contemporary design with a guilloché dial and a sculpted 85-part case made by an artisan from Le Sentier.
Calibre AM36.001 with a massive balance wheel that beats at 1 Hz (7,200 bph)
The balance rim oscillates on a balance bridge with an additional shock absorption system and six cabochon jewels
Expanding on the Perpetual Calendar with Large Balance, this year Antoine Martin introduces an aggressive Open Dial iteration with a stainless steel case and DLC bezel.
Compare the Open Dial with the original Perpetual Calendar with Large Balance (Quantième Perpétuel Au Grand Balancier). Both models are fitted with the in-house Calibre 39.
The Calibre 39 is conceived, designed and assembled in-house and finished to the highest level
The massive titanium balance wheel measures 17.5mm in diameter and beats at 18,000 bph
Photos: Paul Boutros