IWC 88 (1.50 x .105 x 360 x 10.5 DBH End)
GR4138DBHAdditional Information
| IWC Calibre Number | 88, 8803, 8903 |
| Mainspring Barrel Diameter | 10.5 |
| Mainspring Height | 1.50 |
| Mainspring Length | 360 |
| Mainspring Thickness (Strength) | .105, 0.105 |
| Mainspring Type | DBH Special End |
| Swiss Part Description | 1208, 20.100, 20.102, 20100, 20102, 770, 771, 7770, 7771, 7772, MainSpring, Mainsprings |
