Eterna 1239T
Mechanical
Self-winding (rotor)
Date
No photos yet
Notes
1949
first gents automatic-family with ball-bearing rotor (the very first in 1948 was a ladies size: 1194-1199)
already in the year of introduction replaced by the 1239UT with different rotor shape
detail modifications during production periode (cf. 1249T)
differences not known between 1239, 1243
The simultaneous change from T- to U shock device and to a modified calibre (suffix C) lead to many variants. It is unknown whether all calibres were made in the variant TC (old shock device, new calibre); so only the known are listed here. Even signatures of UT versions were changed to UC (cf. 1247UT).
detached manual wind, details cf. 1249UC
Dimensions
| Width | 29 lignes (65.42 mm) |
|---|---|
| Height | 5.9 mm |
| Stem height | 1.6 mm |
| Hands (H × M × S) | 1.5 × 0.9 × 0.21 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 42 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | Yes |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | 9.5 mm |
| Thickness | 0.1 mm |
| Length | — |
| Barrel diameter | 1.5 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Eterna |
| Year | — |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions