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The Valjoux 7750 chronograph movement
The why and how a not-so good-looking “tractor” chronograph movement, born half a century ago, continues to influence the watchmaking world.
A technical illustration of a modern version of the ETA/Valjoux 7750 (image by ETA) The legendary Valjoux 7750 emerged from the manually wound 7733 and incorporated vintage innovations like the oscillating pinion, invented and patented by Edouard Heuer in 1887. A Brellum Duobox Triple Calendar powered by a Valjoux 7751.In addition to these enduring models, the early 1980s saw the introduction of several other 7750-based movements to satisfy the growing demand for chronographs, contributing significantly to the mechanical watch resurgence. The Valjoux 7750 and its variants have powered watches released by IWC, Montblanc, Breitling, Chronoswiss, Heuer, Omega, Porsche Design, Sinn, Fortis, Tudor, Eberhard, Alpina, Bremont, Franck Muller, Panerai, Chopard, Ikepod, Bell & Ross, Maurice Lacroix, Louis Erard – and just about every other brand name you can think of that survived the quartz crisis or was created after and came looking to reclaim the market share.
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