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A. Lange & Söhne Lange 13.75" Movement Specifications, Beat Rate & Dimensions

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Technical Caliber Datasheet

ManufacturerA. Lange & Söhne
Caliber ReferenceLange 13.75"
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)31.55 mm
Height / Thickness4.85 mm
Jewel Count20 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1894

Historical & Mechanical Notes

The A. Lange & Söhne Lange 13.75" is a celebrated example of vintage precision engineering. Featuring 20 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 A. Lange & Söhne Movements

Lange 19.5" H7.5Lange 20"
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