Certina 28.15-5105, 5110, 5121, Screw for: barrel & train wheel brige, balance cock

• CERTINA original screw in very good used condition.
  

• 1 pcs.

• Fits:

• 5105: Barrel bridge (3 pcs / movement)
• 5110: Train wheel bridge (3 pcs / movement)
• 5121: Balance cock (1 pcs / movement)

• Fits cal: 28.15, 28.151, 28.16, 28.161, 28.163

Versions:

• 28.10:   18.000 A/h, sub second.
• 28.15:   18.000 A/h, center second.
• 28.151: 18.000 A/h, center second, date.
• 28.16:   19.800 A/h, center second.
• 28.161: 19.800 A/h, center second, date.
• 28.163: 19.800 A/h, center second, date, circadian rhythm.