Eterna 1437U
Mechanical
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Notes
strange: indirectly driven minute allows a relatively big balance and low profile
The calibres 1437 and 1447 are nearly identical, but mirror inverted. Two equivalent pairs were made as ETA 2480/2485 (18000A/h) and ETA 2482/2487 (21600A/h). As also the dial feet positions were mirrored, it is even impossible to use the same dials for both variants. The reason for these sets of twins are unknown, and for two-hands movements hard to understand.
Dimensions
| Width | 13.05 lignes (29.44 mm) |
|---|---|
| Height | 3.5 mm |
| Stem height | 0.6 mm |
| Hands (H × M × S) | 1.2 × 0.6 × ? mm |
Technical data
| Beat rate | 21,600 vph (3 Hz) |
|---|---|
| Lift angle | 52 ° |
| Power reserve | 38 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | 6.5 mm |
| Thickness | 0.07 mm |
| Length | — |
| Barrel diameter | 1.4 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Eterna |
| Year | — |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions