Zenith 18.5'''

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Example movement: Zenit 18.5''' NVSI, number: 1 659 433 (aprox: 1910), 15 jewels, negative winding/setting mechanism, excenter regulator.


Technical data: Zenith cal: 18.5'''


  • 15 jewels, manual wind, sub second.

  • Size: 18.5''' 41.30 mm.

  • H: = 6.80 mm.

  • N: = 18.000 A/h.

  • Power reserve: 30 h.

  • Mainspring: 2,00 x 16,5 - 0,20 - 500 AT = Double brace and hole.


Versions:


  • 18,5''' open face caliber.

  • 18,5''' hunter caliber.

  • 18,5''' NVSI: open face caliber, negative wind/setting mech.

  • 18,5''' NVSI: hunter caliber, negative wind/setting mech.