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Mainspring
For Ronda 1218-21
1.20 x 0.100 x 9.0 mm
Height (H): 1.2mm
Thickness (T): 0.1mm
Barrel Diameter (BD): 9mm
End Type: Auto
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 |
|---|---|---|
| Bulova H582 | BULOVA CASE REFERENCE | |
| Citizen 4-328566 | CITIZEN CASE | |
| Citizen 4-F50212 | CITIZE CASE REFERENCE | |
| Citizen 4-F50549 | CITIZEN CASE | |
| Citizen 4-Y68668 | CITIZEN CASE | |
| Citizen EA1770 | CITIZE CASE REFERENCE | |
| Eterna 12892 | 12.5 | |
| Girard Perregaux 211 | AUTOMATIC-ADJUSTABLE STUD 39 JWLS | 11.5 |
| Omega 2405 | OMEGA CASE USES CALIBER 360/370 | |
| Seiko 1600-3080 | SEIKO CASE REFERENCE | |
| Seiko 3M21-0A60 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 4100-5070 | SEIKO CASE REFERENCE | |
| Seiko Y148-5040 | PULSAR CASE REFERENCE |
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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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