Longines 23Z-401, Winding stem

• LONGINES original winding stem.
  
• Thread: 0.90 mm.

• Fits cal: 23Z, 23ZD, 23ZN, 23ZS, 23ZSD

Data: Longines 23Z

• 17 jewels, manual wind, center second.
• Size: 10.5'''  23.3 mm.
• H: = 3.50 mm.
• N: = 18.000 A/h.
• Power reserve: 44h.

• Mainspring: 1,50 x 9 - 0.085 - 360 (Prima: 150H 36BA).

Versions:

• 23Z:       sub second.
• 23ZD:     sub second, date.
• 23ZN:     center second.
• 23ZS:     center second.
• 23ZSD:   center second, date.