1.50 x .10 x 320 x 9 Non-Automatic
GR4123Additional Information
| Mainspring Height | 1.50 |
| Mainspring Thickness (Strength) | .10, 0.10 |
| Mainspring Length | 320 |
| Mainspring Barrel Diameter | 9 |
| Mainspring Type | Non Auto |
| Bulova Calibre Number | 11AERC, 13AP |
| Eterna Calibre Number | 1237, 1239 |
| Frenca Calibre Number | 10 |
| Lapanous Calibre Number | 151, 24.46, 25.46, 26.46 |
| Puw Calibre Number | 60 |
| ST Calibre Number | 73 |
| Swiss Part Description | 1208, 20.100, 20.102, 20100, 20102, 770, 771, 7770, 7771, 7772, MainSpring, Mainsprings |
