Certina 23-35-445, Setting lever spring

• 
  Certina original part, not in factory packaging.

• 
  Comes with screw: 5445

• 
  Fits cal: 23-35, 25-36

Data Certina caliber: 23-35

• 
  17 jewels, manual wind, sweep second.
• 
  S: = 10.5''' 23.30 mm.
• 
  H: = 4.25 mm.
• 
  N: = 18.000 A/h.
• 
  Power reserve: 38 h.
• 
  Mainspring: 1.30 x 9 - 0.095 - 310

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.