Certina 15.20-5750, Screw for dial

• CERTINA original screw, not in factory packaging.

• 1 pcs (2 pcs/movement)

• Fits cal: 15.20, 15.21
  

Versions:

• 15.20: 6.75''' 19.800 A/h.
• 15.21: 6.75''' 21.600 A/h.
• 17.211: 7.75''' 21.600 A/h, date.
• 17.221: 7.75''' 21.600 A/h, date, modified balance.