Gruen 157 (Marc Favre 768)
Mechanical
c. 1925
No photos yet
Notes
1925-
Alpina Gruen Gilde 1929-1937
bimetallic screw balance
Breguet hairspring
straight lever (ligne angulaire)
stem mechanism without setting-lever spring
Dimensions
| Width | 19.8 lignes (44.66 mm) |
|---|---|
| Height | 4 mm |
| Stem height | — |
| Hands (H × M × S) | 1.22 × 0.7 × 0.16 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 41 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | Zf1062 |
|---|---|
| Height | 10.5 mm |
| Thickness | 0.12 mm |
| Length | 320 mm |
| Barrel diameter | 1.4 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Gruen |
| Year | c. 1925 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions