Baume & Mercier Caliber BM12800
Baume & Mercier Caliber BM12800

Baume & Mercier Caliber BM 12800

Automatic
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BrandBaume & Mercier
Caliber NumberBM 12800, BM12800
In-House?
No
Base Caliber
Buren 1280
Movement TypeAutomatic, self-winding mechanical
Lignes12.5”’
Diameter
28.1mm
Height
2.85mm
Jewels
30
Beat Rate
19,800 vph
Lift Angle
48 degrees
Power Reserve
54 hours
Rotor Style
Micro rotor
Hand-Windable?
Yes
Anti-Shock Device
Incabloc
Hand Count2
Hand Sizes
1.4mm / 0.8mm
FunctionsCentral hours; central minutes
Features
Indirect drive minutes
Country of ManufactureSwitzerland, Swiss made
Known Models
Vintage Baume & Mercier Baumatic (Add your watch to the comments below…)

The Baume et Mercier caliber BM 12800 is a vintage micro-rotor watch movement found in Baumatic watch from circa 1960s. The base movement is actually a Buren calibre with Baume & Mercier branding.

Additional Resources:

  • More Baume & Mercier watch movements

Note: This caliber listing is still being updated, but feel free to start discussions on it in the comments below…

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