Certina 17-25-721, Balance, Complete

• CERTINA original balance in factory sealed packaging.

• Fits cal: 17-25, 17-251

Technical data Certina cal: 17-25

• 17 jewels, manual wind, sweep second.
• S: = 7.75''' 17.2 mm.
• H: = 3.7 mm.
• N: = 19.800 A/h.
• Power reserve: 44 h.

Versions:

• 17-25:
• 17-251: date.