FHF 57, Minute wheel, no: 260

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  New original part in factory sealed packaging.

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  Fits cal: 57, 57-21

Technical data: FHF: 57

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  17 jewels, manual wind, sweep second.
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  Size: 6.75''' 15.3 mm.
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  H: = 4.0 mm.
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  N: = 18.000 A/h.
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  Power reserve: 40 h.

Versions:

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  57: 18.000 A/h.
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  57-21: 21.600 A/h.