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Mainspring
For Unitas 457
1.20 x 0.100 x 290 x 9.0 mm
Height (H): 1.2mm
Thickness (T): 0.1mm
Total Length (TL): 290mm
Barrel Diameter (BD): 9mm
End Type: Manual
To look for similar mainsprings that exactly match a specific dimension, select it from the links above.
GR Approximation
This mainspring does not have a GR reference. The following GR mainsprings are the closest fit, when values differ the exact value is shown brackets for reference:
| GR Reference # | Mainspring |
|---|---|
| GR2920 | 1.20 x 0.100 x 300 (290) x 9.0 mm |
Movement Listing
This mainspring is used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Eterna 1274 | 10.5 | |
| Gruen ETA 651 | ETA 651 | |
| Omega 591.952 | OMEGA CASE USES CALIBER 1387 | |
| Seiko 1F20-6G00 | ||
| Zodiac 12 OLD | CALENDAR-DIRECT CENTER SECOND | 12 |
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Similar Mainspring Listing
This mainspring is similar to that used by the following movements. When values differ the exact value is shown brackets for reference:
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