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Aretta 23-50M Movement Specifications, Beat Rate & Dimensions

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Technical Caliber Datasheet

ManufacturerAretta
Caliber ReferenceAretta 23-50M
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)23.8 mm
Height / Thickness4.2 mm
Jewel Count19 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1950

Historical & Mechanical Notes

The Aretta 23-50M is a celebrated example of vintage precision engineering. Featuring 19 jewels and operating at 18,000 BPH, surviving examples are prized by collectors and restorers. For further technical reference on vintage watch movements, consult the Rolex Forums technical reference.

Restoration enquiries: antiquewrist.com
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