Movement History Archives

In-Depth – The History of the ETA Unitas 6497 and 6498, the Ubiquitous and Robust Hand-Wound Calibre

How do a pair of manually wound, time-only, pocket watch-sized, potentially outdated movements introduced in the 1950s earn a place in our series on significant calibres, alongside the well-known El Primero and Valjoux 7750 chronograph calibre and the omnipresent automatic ETA 2824 and 2892? Several factors contribute to their importance. Despite seeming unusual today, the […]

In-Depth – The History of the Zenith El Primero, The Glorious High-Frequency Automatic Chronograph That Almost Died

In our series on historically significant calibres, the best way to honour the El Primero calibre is by highlighting its qualities, functional characteristics, and pivotal role in shaping the watchmaking industry. While the tale of its salvation in 1976, along with that of Zenith as a company, by a courageous man defying the ill will […]

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Category: Movement History

In-Depth – The History of the ETA Unitas 6497 and 6498, the Ubiquitous and Robust Hand-Wound Calibre

In-Depth – The History of the Zenith El Primero, The Glorious High-Frequency Automatic Chronograph That Almost Died