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Guild Home > Calibers > Waltham > Waltham Colonial B

Waltham Colonial B Movement Specifications, Beat Rate & Dimensions

WALTHAM • Waltham Colonial B DIAMETER: 28.0 mm | JEWELS: 17 Jewels | FREQ: 18,000 BPH ARCHIVE SPEC
Original Horological Blueprint • Waltham Waltham Colonial B Architecture

Technical Caliber Datasheet

ManufacturerWaltham
Caliber ReferenceWaltham Colonial B
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)—
Height / Thickness5.0 mm
Jewel Count17 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1929

Historical Reference & Restoration Notes

The Waltham Colonial B 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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