Certina 19.25-401, Winding stem

• CERTINA original stem, not in factory packaging.

• Thread: 0,90 mm.

• Fits cal: 19.25, 19.251, 19.26, 19.30, 19.35, 19.351, 19.36
  

Versions: 18.000 A/h.

• 19-25:    manual wind, sweep second.
• 19-251:  manual wind, sweep second, date.
• 19-26:    manual wind, sweep second, modified barrel.
• 19-30:    manual wind, sub second.
• 19-31:    manual wind, sub second, plate without mounting flanges.

Versions: 19.800 A/h.

• 19-35:    manual wind, sweep second.
  
• 19-351:  manual wind, sweep second, date.
• 19-36:    manual wind, sweep second, modified barrel.