Certina 17.211-2576, Date jumper with spring.

• CERTINA original part in factory sealed packaging.
  

• Fits cal: 17.211, 17.221
  

Technical data Certina cal: 17-211

• 32 jewels, automatic wind.
  
• S: = 7.75'''  17.2 mm.
• H: = 5.10 mm.
• N: = 21.600 A/h.
• Power reserve: 39 h.

Versions, Automatic wind, base caliber: 15-20

• 17-211:  21.600 A/h, automatic wind, date.
  
• 17-221:  21600 A/h, automatic wind, date, new balance.