Junghans J43a
Mechanical
c. 1929
Hacking
No photos yet
Notes
1929-
hunter calibre
bimetallic screw balance with 4 adjustment screws
Breguet hairspring
The Junghans J43 with separate escape-wheel cock was after Junghans made especially for Alpina (Alpina 238), and from the real world also the Alpina 228 with monometallic balance is known, which would have the according Junghans designation J43a. It is uncertain whether these calibres were also applied in Junghans watches.
Dimensions
| Width | 41.85 lignes (94.41 mm) |
|---|---|
| Height | 4.5 mm |
| Stem height | 0.6 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. 1929 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions