Moonwatch Movements

Caliber 321

Manual-wind chronograph, counters for 60 seconds, 30 minutes and 12 hours, column-wheel, sub second. Base caliber Lemania CH27 C12. Also known as Omega 27CHRO C12 T2.

  • Diameter: 12”’/ 27.0mm
  • Height: 6.74mm
  • Jewels: 17
  • Bph: 18000 A/h
  • Power reserve: 44h
  • Replaced by Caliber 861 around 1968-1969

Caliber 861

Omega Speedmaster Caliber 861

Omega Speedmaster Caliber 861

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second. Base caliber Lemania 1873.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 17
  • Bph: 21600 A/h
  • Power reserve 40h
  • Replaced by Caliber 1861 around 1996-1997

Caliber 861L

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second. Base caliber Lemania 1873. High grade finishing.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 19
  • Bph: 21600 A/h
  • Power reserve 40h

Caliber 863

Omega Speedmaster Caliber 863

Omega Speedmaster Caliber 863

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second. Base caliber Lemania 1873. High-grade finishing for see-through casebacks.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 17
  • Bph: 21600 A/h
  • Power reserve 40h
  • Replaced by Caliber 1863 around 1996-1997

Caliber 864

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second. Base caliber Lemania 1873. High-grade finishing for see-through casebacks. Certified chronometer.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 21
  • Bph: 21600 A/h
  • Power reserve 40h

Caliber 866

Omega Speedmaster Caliber 866

Omega Speedmaster Caliber 866

 

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second, date hand at 12 (set by corrector at 9:20), moon phase at 12h (set by corrector at 10h). Base caliber Lemania 1873.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 17
  • Bph: 21600 A/h
  • Power reserve 40h
  • Replaced by Caliber 1866 around 1996-1997

Caliber 867

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second. Base caliber Lemania 1873. High-grade finishing for see-through casebacks. Certified chronometer. Hand skeletonized by Armin Strom.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 21
  • Bph: 21600 A/h
  • Power reserve 40h

Caliber 1861

Omega Speedmaster Caliber 1861

Omega Speedmaster Caliber 1861

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second. Base caliber Lemania 1873.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 18
  • Bph: 21600 A/h
  • Power reserve 40h

Caliber 1863

Omega Speedmaster Caliber 1863

Omega Speedmaster Caliber 1863

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second. Base caliber Lemania 1873. High-grade finishing for see-through casebacks.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 18
  • Bph: 21600 A/h
  • Power reserve 40h

Caliber 1866

Omega Speedmaster Caliber 1866

Omega Speedmaster Caliber 1866

Manual-wind chronograph, counters for 60 seconds, 30 minutes, 12 hours, cam switched, sub second, date hand at 12 (set by corrector at 9:20), moon phase at 12h (set by corrector at 10h). Base caliber Lemania 1873.

  • Diameter: 12”’ / 27.0mm
  • Height: 6.87mm
  • Jewels: 18
  • Bph: 21600 A/h
  • Power reserve 40h

5 Responses to Moonwatch Movements

  1. RegF says:

    Be nice if you added the dates of production and serial number ranges for these movements along with some sample pictures of each

  2. Manos says:

    Vero useful Information. Thank you!

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