Omega 661 Ladymatic

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Movement number: 26 461 210 (aprox: 1967).


Data: Omega cal 661 (15 RA PC AM 24p).

  • 24 jewels, automatic wind, hour and minute display.
  • Size: 15.40 mm.
  • H: = 4.25 mm.
  • N: = 19.800 A/h.
  • Power reserve: 42 h.


Versions:

  • 660: 17 jewels. 19.800 A/h. (1963)
  • 661: 24 jewels, 19.800 A/h, modified automatic mechanism. (1963)
  • 662: 17 jewels, 21.600 A/h. major modifications. (1975)
  • 663: 24 jewels, 21.600 A/h. (1975)