Tissot 18" open-face
Mechanical
c. 1920
No photos yet
Notes
1920-1933
open face calibre
option: bimetallic screw balance, Breguet hairspring (cf. hunter)
Dimensions
| Width | 40.45 lignes (91.25 mm) |
|---|---|
| Height | 3.85 mm |
| Stem height | 0.5 mm |
| Hands (H × M × S) | 1.85 × 0.95 × 0.28 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 | No |
| Chronograph | No |
Mainspring
| GR code | Zf2873 |
|---|---|
| Height | 16 mm |
| Thickness | 0.2 mm |
| Length | 450 mm |
| Barrel diameter | 1.3 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Tissot |
| Year | c. 1920 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions