Valjoux
From Chronopedia
Valjoux
Movement maker, mostly chronographs. based in Switzerland. Famous ones include the VJ7733 and 7750. They were made in their millions and appeared in hundreds of different manufacturers. See Croton and Wakmann for just a few examples.
Alongside the likes of ETA and Sellita, Valjoux is another major leader in the mechanical movement industry. The Swiss movement manufacturer focuses mainly on chronograph ébauche calibres and is most widely recognised for their famous Valjoux 7750 movement which is considered one of the greatest chronograph movements in the world in both popularity and numbers.