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Guild Home > Calibers > Gruen > Gruen 212

Gruen 212 Movement Specifications, Beat Rate & Dimensions

GRUEN • Gruen 212 DIAMETER: 15.3 mm | JEWELS: 7 Jewels | FREQ: 18,000 BPH ARCHIVE SPEC
Original Horological Blueprint • Gruen Gruen 212 Architecture

Technical Caliber Datasheet

ManufacturerGruen
Caliber ReferenceGruen 212
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)15.35 mm
Height / Thickness3.4 mm
Jewel Count7 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1939

Historical Reference & Restoration Notes

The Gruen 212 is a celebrated example of vintage precision engineering. Featuring 7 jewels and operating at 18,000 BPH, surviving examples are prized by collectors and restorers.

Restoration enquiries:
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