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Helvetia 830, Click spring, no 430

Helvetia 830, Click spring, no 430

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  • HELVETIA original part in very good used condition.
  • Fits cal: 830, 837, 838, 844, 845


Data: Helvetia cal: 830

  • 17/21 jewel, manual wind, sweep seconds.
  • S: = 25.6 mm 11.5'''
  • H: = 4.30 mm.
  • N: = 18.000 A/h.
  • Power reserve: 45 h.


Versions:

  • 830: Manual wind
  • 837: Automatic winding.
  • 838: Automatic winding, new designed rotor locking.
  • 844: New automatic mechanism, date.
  • 845: New automatic mechanism.