1962 · Ernest Borel
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Shown in the order they were catalogued.
Features
Mechanical
A watch powered by a traditional mechanical movement, typically requiring manual winding to operate, without the use of batteries or electronic components.
Incabloc
A shock protection system used in watch movements, preventing damage to the balance staff, which is critical for maintaining accurate timekeeping.
The ETA 2391 is an 11½''' (26 mm) manual-wind movement with centre seconds and Incabloc shock protection, from around 1960. It is a hand-wound member of ETA's 2390–2472 family, which also includes the automatic ETA 2472, and was made with 17 or 21 jewels.