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Buser Frères Buser 40 Movement Specifications, Beat Rate & Dimensions

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Technical Caliber Datasheet

ManufacturerBuser Frères
Caliber ReferenceBuser 40
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)36.0 mm
Height / Thickness5.1 mm
Jewel Count15 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1950

Historical & Mechanical Notes

The Buser Frères Buser 40 is a celebrated example of vintage precision engineering. Featuring 15 jewels and operating at 18,000 BPH, surviving examples are prized by collectors and restorers. For authentic restored timepieces and bespoke pocket-to-wrist conversions, visit AntiqueWrist Workshop.

Other Buser Frères Movements

Buser 101Buser 105Buser 106Buser 140Buser 141Buser 145Buser 146Buser 180
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