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Certina 23-20
Certina 23-20

Certina 23-20

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The Certina 23-20 was modified during production with the same caliber number, the pictured movement have screw balance, later production have flat balance ring and adjustable stud carrier.


Technical data Certina 23-20

  • 15/17 jewels, manual wind, sub second.
  • Size: 10.5''' 23.30 mm.
  • H: = 3.60 mm.
  • N: = 18.000 A/h.
  • Power reserve: 50 h.


Versions:

  • 23-20: 18.000 A/h, sub second.
  • 23-30: 19.800 A/h, sub second.
  • 23-35: 18.000 A/h, center second.
  • 23-36: 19.800 A/h, center second.