FHF 64, 64-2, 64-2N, 641, 641-2, 641-2N, 642, Winding stem, no: 401

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  New original part, not in factory packaging.

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  Thread: 90

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  Fits cal: 64, 64-2, 64-2N, 641, 641-2, 641-2N, 642 (8.75''').

Technical data: FHF: 64

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  17 jewels, manual wind, sweep second.
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  Size: 8.75''' 19.4 mm.
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  H: = 4.3 mm.
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  N: = 18.000 A/h.
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  Power reserve: 44 h.