Girard Perregaux 18-5415, Screw for ratchet wheel

• GIRARD PERREGAUX original part in very good used condition.
  

• Fits cal: 18, 19, 20, 21, 22, 23
  

Data: GIRARD PERREGAUX 21 (Peseux 335).

• 17/39 jewels, automatic wind, center second
  
• Size: 11,5''' , 25,6 mm.
• H: = 5.50 mm.
• N: = 18.000 A/h.
  
• Power reserve: 35 h.

Versions:

• 18: manal wind, sub second.
• 19: automatic, sub second.
• 20: manual wind, center second.
• 21: automatic, center second.
• 22: automatic, center second, date.
• 23: manual wind, center second, date.