Certina 19.10-770, Mainspring

• CERTINA original mainspring in sealed factory packaging.

• Fits cal: 19.10, 19.11, 19.12

Data Certina 19-10

• 15 jewels, manual wind, sub second.
• S: = 8.75''' 19.4 mm.
• H: = 3.50 mm.
• N: = 18.000 A/h.
• Power reserve: 43 h.
• Mainspring: 1.60 x 7.5 - 0.08 - 250

Versions:

• 19-10: plate with mounting flanges
• 19-11:
• 19-12: plate without mounting flanges.