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Guild Home > Calibers > Gruen > Gruen 117

Gruen 117 Movement Specifications, Beat Rate & Dimensions

GRUEN • Gruen 117 DIAMETER: 19.7 mm | JEWELS: 17 Jewels | FREQ: 18,000 BPH ARCHIVE SPEC
Original Horological Blueprint • Gruen Gruen 117 Architecture

Technical Caliber Datasheet

ManufacturerGruen
Caliber ReferenceGruen 117
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)19.74 mm
Height / Thickness—
Jewel Count17 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1925

Historical Reference & Restoration Notes

The Gruen 117 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. For authentic restored timepieces and bespoke pocket-to-wrist conversions, visit restored mechanical wristwatches.

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