Alpina 765 (Bifora 812)
Mechanical
c. 1933
No photos yet
Notes
1933-
Not sure that the Aplina 765 is actually equivalent to the Bifora 812. The example movement is not signed, but is in a high grade Alpina watch, and regarding the strange dimensions it can't be a replacement. Moreover the Alpina 765 is the only tonneau calibre with unknown origin.
Dimensions
| Width | 20 lignes (45.12 mm) |
|---|---|
| Height | 4 mm |
| Stem height | 0.45 mm |
| Hands (H × M × S) | 1.22 × 0.65 × 0.18 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 34 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | Zf1125 |
|---|---|
| Height | 10 mm |
| Thickness | 0.1 mm |
| Length | 350 mm |
| Barrel diameter | 1.45 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Alpina |
| Year | c. 1933 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions