Junghans J41a/1 *)
Mechanical
c. 1928
Hacking
No photos yet
Notes
1928-
open face calibre
Breguet hairspring
*) This calibre was noticed as Alpina 227, but it is not yet known, whether it was also used in Junghans watches.
Dimensions
| Width | 41.85 lignes (94.41 mm) |
|---|---|
| Height | 4.5 mm |
| Stem height | 0.55 mm |
| Hands (H × M × S) | 1.6 × 0.85 × 0.27 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 35 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | Yes |
| Chronograph | No |
Mainspring
| GR code | Zf3032 |
|---|---|
| Height | 16 mm |
| Thickness | 0.21 mm |
| Length | 440 mm |
| Barrel diameter | 1.5 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Junghans |
| Year | c. 1928 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions