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FHF 57, 57-21 (6.75''') Winding stem, no: 401

FHF 57, 57-21 (6.75''') Winding stem, no: 401


  • New original part, not in factory packaging.

  • Thread: 90

  • Fits cal: 57, 57-21


Technical data: FHF: 57


  • 17 jewels, manual wind, sweep second.

  • Size: 6.75''' 15.3 mm.

  • H: = 4.0 mm.

  • N: = 18.000 A/h.

  • Power reserve: 40 h.


Versions:


  • 57: 18.000 A/h.

  • 57-21: 21.600 A/h.