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Guild Home > Calibers > Bulova > Bulova 12B

Bulova 12B Movement Specifications, Beat Rate & Dimensions

thumb 1 thumb 2

Technical Caliber Datasheet

ManufacturerBulova
Caliber ReferenceBulova 12B
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)28.2 mm
Height / Thickness6.4 mm
Jewel Count17 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1951

Historical Reference & Restoration Notes

The Bulova 12B is a celebrated example of vintage precision engineering. Featuring 17 jewels and operating at 18,000 BPH, surviving examples are prized by collectors and restorers.

Restoration enquiries:
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