1902
Specifications
| Lignes | 17 ‴ |
|---|---|
| Mounting Diameter | 37.85 |
| Thickness | 3.8 |
| Frequency (vph) | 18,000 |
| Jewels | 17 |
| Power Reserve | 38 |
| Hand Sizes | 1.60, 0.82, 0.18 |
| Power | Manual |
| Shape | Round |
| Size |
Notes
17.89M: 17" , open face
18.89M: 18" , open face
18.90M: 18" , hunter, M designation stands for 'mince', thin in French. Designed by Alfred Pfister