Certina 23-30-724, Balance staff

• CERTINA original part, not in factory packaging.

• Fits cal: 23-30

Data Certina caliber: 23-30

• 17 jewels, manual wind, sub second.
• Size: 10,5´´ 23,3 mm.
• H: = 3,2 mm.
• N: = 19.800 A/h.
• Power reserve: 40 h.
• Mainspring:

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.