1.45 x .115 x 380 x 10.5 T- End
GR3999TAdditional Information
| Swiss Part Description | 1208, 20.100, 20.102, 20100, 20102, 770, 771, 7770, 7771, 7772, MainSpring, Mainsprings |
| Mainspring Height | 1.45 |
| Mainspring Thickness (Strength) | .115, 0.115 |
| Mainspring Length | 380 |
| Mainspring Barrel Diameter | 10.5 |
| Mainspring Type | T End |
| Longines Calibre Number | 12.91, 12.92 |
£7.30
EACH
