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

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5 thoughts on “Moonwatch Movements

  1. RegF

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

    1. Speed Master Post author

      Dear RegF,

      Your wish is our command – please check our most recent update. Also, full tech sheets are uploaded to the Documents section. Thank you for your suggestion!

Comments are closed.