ETA 2428
Mechanical
c. 1956
Self-winding (rotor)
No photos yet
Notes
1956-
first ETA calibre with 21600 A/h
like Eterna 1419U, but neither ball bearing nor gold rotor
indirectly driven minute allows a very big balance
2410, 2415: manual wimd, 18000 A/h
2412, 2413, 2417: manual wimd, 21600 A/h
2425: automatic, 18000 A/h
2428: automatic, 21600 A/h
Dimensions
| Width | 15.3 lignes (34.51 mm) |
|---|---|
| Height | 4.95 mm |
| Stem height | 1 mm |
| Hands (H × M × S) | 1.2 × 0.6 × ? mm |
Technical data
| Beat rate | 21,600 vph (3 Hz) |
|---|---|
| Lift angle | 51 ° |
| Power reserve | 35 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR3575-X |
|---|---|
| Height | 1.4 mm |
| Thickness | 0.07 mm |
| Length | 200 mm |
| Barrel diameter | 6.5 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | ETA |
| Year | c. 1956 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions