4.10 x 0.14 x 380 x 12mm (to fit Looping 50/51 (8 day) - Alarm side
50770AAdditional Information
| Mainspring Height | 4.10 |
| Mainspring Thickness (Strength) | 0.14 |
| Mainspring Length | 380 |
| Mainspring Barrel Diameter | 12 |
| Mainspring Type | Non Auto |
| Clock Part Description | Mainspring, Mainspring Time Side |
| Looping Clock Calibre Number | 50, 51 |
