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BM 12800 Movement Specifications, Beat Rate & Dimensions |
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Technical Caliber Datasheet
| Manufacturer | BM |
| Caliber Reference | BM 12800 |
| Movement Type | Automatic |
| Diameter (Lignes) | — |
| Diameter (mm) | 28.55 mm |
| Height / Thickness | 2.85 mm |
| Jewel Count | 30 Jewels |
| Beat Rate / Frequency | 18,000 BPH |
| Lift Angle | 51° |
| Power Reserve | 38 hours |
| Escapement | Swiss Lever |
| Production Period | 1962 |
Historical & Mechanical Notes
The BM 12800 is a celebrated example of vintage precision engineering. Featuring 30 jewels and operating at 18,000 BPH, surviving examples are prized by collectors and restorers. For further technical reference on vintage watch movements, consult the Watch Repair Talk community archive.
Restoration enquiries:
Other BM Movements
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