Certina 15-10-401, Winding stem

• 
  Certina original part. Not in factory packaging.

• 
  Thread: 0,90 mm.

• 
  Fits cal: 258, 258 SC, 15-10, 15-14

Versions:

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  15-10: no second.
• 
  15-14: center second, H=4,25 mm.