Alpina 238 (Junghans J43)
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Alpina |
| Year | ~1929 |
Documents
No documents
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 |
|---|---|
| Height | 4.5 mm |
| Stem height | 0.6 mm |
| Hands diameter (H x M x S) | 1.6 x 0.85 x 0.27 mm |
Technical data
| Lift angle | ° |
|---|---|
| Beat rate | 18000 BPH |
| Jewels count | |
| Power reserve | 35 hours |
| Shock protection | |
| Mobile stud carrier | false |
Complications
| Self winding | no |
|---|---|
| Date | false |
| Day | false |
| Hacking | true |
| Chronograph | false |
Mainspring
| GR code | Zf3032 |
|---|---|
| Length | 440 |
| Height | 16.0 |
| Thickness | 0.21 |
| Diameter | 1.5 |