Waltham 1899 open-face
Mechanical
c. 1899
No photos yet
Notes
1899-1908
open-face calibre
pink gold center wheel,
bimetallic screw balance, Breguet hairspring
partially fine regulation gear,
safety barrel (details cf. Waltham 6.5" )
Dimensions
| Width | 41.4 lignes (93.39 mm) |
|---|---|
| Height | 6.4 mm |
| Stem height | — |
| Hands (H × M × S) | 1.9 × 1.18 × 0.25 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 | — |
|---|---|
| Height | 17 mm |
| Thickness | 0.18 mm |
| Length | — |
| Barrel diameter | 2.9 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Waltham |
| Year | c. 1899 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions