Swatch Group and Audemars Piguet develop a new alloy for balance springs called Nivachron
A Complete Guide to the Regulating Organ - Monochrome Watches
Tissot Caliber Powermatic 80 Watch Movement | Caliber Corner
Swatch Group and Audemars Piguet collaborate to develop Nivachron balance springs | Time and Watches | The watch blog
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Certina - The NEX Scratchguard coating and the magnetic field-resistant Nivachron™ balance spring make the DS PH200M as solid as a rock. #CountOnMe 📸 : Photofever.com - Photos inspire Emotions | Facebook