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Omega 23.4SC
Omega 23.4SC

Omega 23.4SC

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Omega's first movement with center second, introduced in 1936 and replaced the cal 23.7 from 1918. The cal 23.4 was a great success with a total production of 120.100 pcs. Production ended in 1959.

The pictured movement with number 8.900 000 is not for sale, just information.


Technical data Omega cal: 23.4SC (220).

  • 15 jewels, manual wind, sweep second.
  • S: = 23.40 mm
  • H: = 3.75 mm.
  • N: = 18.000 A/h.
  • Power reserve: 43 h.
  • Mainspring: 1.40 x 9 - 0.95 - 310 mm.


Versions:

  • 23.4:         15/17 jewels, sub second, 1936
  • 23.4SC:     15 jewels, sweep second, 1937
  • 23.4T1:     15 jewels, minor mod. 1941
  • 23.4T2:      = cal: 220 after 1949
  • 23.4T1SC:  = cal: 230 after 1949
  • 231:          15 jewels, sweep second, antimagnetic, 1951