Longines 19.71N

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Example movement: Serial number: 5 162 773, manufactured in aprox: 1930.

Technical data Longines cal: 19.71N, Open face.
  • 16 jewels, stem wind, hour, minute, sub second.
  • Size: 19''' 41.9 mm.
  • H: = 6.60 mm.
  • N: = 18.000 A/h.
  • Power reserve: 40 h.
  • Mainspring: 2.40 x 16,5 - 0,19 - 520 BA Double brace


Versions:

  • 15 Jewels.
  • 16 Jewels with patent regulator.