Cyma 420
Mechanical
c. 1943
Self-winding (rotor)
No photos yet
Notes
1943-1954
first Cyma automatic
mounted with mounting plates of different sizes, Fig.4: 12.5" , Do=27.8mm
family:
420: automatic, sub second
420KT: automatic, sweep second
424K: manual wind, sub second
425: automatic, sweep second, date
426KT: manual wind, sweep second
shock device only in calibres with suffix K
Dimensions
| Width | 19 lignes (42.86 mm) |
|---|---|
| Height | 5.8 mm |
| Stem height | — |
| Hands (H × M × S) | 1.05 × 0.7 × 0.15 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 30 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR3609 |
|---|---|
| Height | 1.4 mm |
| Thickness | 0.08 mm |
| Length | 280 mm |
| Barrel diameter | 8 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Cyma |
| Year | c. 1943 |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions