BRANDS: Eterna
| Production: 1939 – | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Cal. 835 was the first mass-produced automatic movement from Eterna. Based on the compact hand-winding Cal. 845, it measured 11.75 to 12.5 ligne with the bumper winding rotor installed and pioneered features like a slip spring in the barrel to avoid over-winding. It was mass produced in the 1940s, giving Eterna a lead in waterproof watches.
| Cal. 835 | 12.5”’ | Small seconds |
| Cal. 834 | 12.5”’ | Small seconds |
| Cal. 833 | 12.5”’ | Center seconds |
| Cal. 1033 | 9.5”’ | No seconds |
| Cal. 1034 | 9.5”’ | Center seconds |
| Cal. 1176 | 13”’ | Small seconds |
| Cal. 1158 | 12”’ | Center seconds |
| Cal. 1159 | 13”’ | Center seconds |
| Calibre | Start Year | End Year | Jewels | Diameter (mm) | Height (mm) | Complications |
|---|---|---|---|---|---|---|
| Eterna 835 | 1939 | 17, 19, 21 | 26.0 | 5.4 |
