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Mainspring
For Osco 850
1.55 x 0.100 x 250 x 8.5 mm
Height (H): 1.55mm
Thickness (T): 0.1mm
Total Length (TL): 250mm
Barrel Diameter (BD): 8.5mm
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:
Movement Listing
This mainspring is used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Citizen 4-043839 | CITIZEN CASE | |
| Citizen 4-H01644 | CITIZEN CASE | |
| Concord 487 | 3.75 x 10.5 | |
| ETA 944.101 | QUARTZ-ANALOG-DSS | 12 |
| Omega 198.012 | OMEGA CASE REFERENCE | |
| Seiko 5P39-5A10 | SEIKO CASE REFERENCE | |
| Omega 7309 | OMEGA CASE USES CALIBER 600 | |
| Seiko 1F20-6C00 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 2620-5150 | SEIKO CASE REFERENCE | |
| Seiko 2A29-5020 | SEIKO CASE REFERENCE | |
| Seiko 4N21-1040 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 5P39-5A10 | SEIKO CASE REFERENCE | |
| Seiko 7431-5059 | SEIKO CASE REFERENCE | |
| Seiko 7N42-6C50 | SEIKO CASE REFERENCE COSERVE 2003/2004 |
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Similar Mainspring Listing
This mainspring is similar to the mainspring used by the following movements. A similar mainspring differs slightly in one or more dimensions but may possibly still work as a replacement. When values differ the exact value is shown brackets for reference:
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