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Guild Home > Calibers > Benrus > Benrus EG 1S5

Benrus EG 1S5 Movement Specifications, Beat Rate & Dimensions

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Technical Caliber Datasheet

ManufacturerBenrus
Caliber ReferenceBenrus EG 1S5
Movement TypeAutomatic
Diameter (Lignes)—
Diameter (mm)26.0 mm
Height / Thickness5.8 mm
Jewel Count17 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1955

Historical Reference & Restoration Notes

The Benrus EG 1S5 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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