Tissot 27B-621
Mechanical
c. 1950
Date
No photos yet
Notes
1950-1961
early samples with regulator pointer (cf. 27B-21)
Dimensions
| Width | 26.5 lignes (59.78 mm) |
|---|---|
| Height | 5.7 mm |
| Stem height | 1.6 mm |
| Hands (H × M × S) | 1.4 × 0.8 × 0.2 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 44 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | Yes |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR4935 |
|---|---|
| Height | 1.7 mm |
| Thickness | 0.12 mm |
| Length | 320 mm |
| Barrel diameter | 9.5 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Tissot |
| Year | c. 1950 |
| Family | — |
| Clone of | — |
Related calibers
Documents
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Updated 7 days ago · 0 revisions