 |
ETA 501 Movement Specifications, Beat Rate & Dimensions |
|
Technical Caliber Datasheet
| Manufacturer | ETA |
| Caliber Reference | ETA 501 |
| Movement Type | Manual |
| Diameter (Lignes) | — |
| Diameter (mm) | 19.8 mm |
| Height / Thickness | 3.3 mm |
| Jewel Count | 15 Jewels |
| Beat Rate / Frequency | 18,000 BPH |
| Lift Angle | 51° |
| Power Reserve | 38 hours |
| Escapement | Swiss Lever |
| Production Period | 1925 |
Historical & Mechanical Notes
The ETA 501 is a celebrated example of vintage precision engineering. Featuring 15 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 British Horological Institute archive.
Restoration enquiries:
Other ETA Movements
Copyright © 1985-2026 Antique Watch & Clock World. All rights reserved.