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How do a pair of manually wound, time-only, pocket watch-sized, potentially outdated movements introduced in the 1950s earn a place in our series on significant calibres, alongside the well-known El Primero and Valjoux 7750 chronograph calibre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 […]

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