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Mainspring
For Seiko 6309-5450
1.25 x 0.100 x 520 x 12.0 mm
GR Reference #: GR3121
Height (H): 1.25mm
Thickness (T): 0.1mm
Total Length (TL): 520mm
Barrel Diameter (BD): 12mm
End Type: Manual
The Total Length (TL) (520mm) is selected. Return to full mainspring page here.
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