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Longines 27M-5423, Screw for crown wheel core

Longines 27M-5423, Screw for crown wheel core

Tax included.
  • LONGINES original screw form a NOS movement.
  • Left threaded.
  • Fits cal: 27M, 27MS

 

Data: Longines 27M

  • 17 jewels, manual winding, sub second.
  • Size: 12'''  27,0 mm.
  • H: = 3.2 mm.
  • N: = 18.000 A/h.
  • Power reserve: 40 h.

Versions:

  • 27M:      sub second, flat hairspring, H=3,20 mm.
  • 27MS:    sweep second, flat hairspring, H=4,30 mm.
  • 27M:      shock resist, sub second, flat hairspring.
  • 27MS:    shock resist, sweep seccond, flat hairspring.