Waltham 1877 open-face
Mechanical
c. 1877
No photos yet
Notes
1877-1887
open face calibre
ratchet on dial side, crown mechanism with rocker bar
mostly bimetallic screw balance
brass escape wheel
Dimensions
| Width | 44.5 lignes (100.38 mm) |
|---|---|
| Height | 10.35 mm |
| Stem height | 1.45 mm |
| Hands (H × M × S) | 2.46 × 1.32 × 0.3 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | — |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | — |
| Thickness | — |
| Length | — |
| Barrel diameter | — |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Waltham |
| Year | c. 1877 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions