Description: New Old Stock (NOS) mainspring for mechanical watch movements. This spring is supplied in its original foil packaging and is suitable for the calibres or movement sizes listed below. Ideal for watchmakers, restorers, and vintage watch repair projects.
Key Details:
Brand: Generale Ressorts
Part Type: Mainspring
Height: 1.35mm
Thickness: 0.09mm
Length: 320mm
Additional Notes:
Generale Ressorts: 3500
Diameter: 9mm
Compatible Movements / Sizes:
Cyma 137
Cyma 157
Cyma 170
Cyma 187
Cyma 188
Felsa 63
Condition:
Vintage New Old Stock (NOS)
Unused
Supplied in original foil packaging
Some age-related wear or marking to packaging may be present
Summary: Quality vintage New Old Stock (NOS) mainspring suitable for mechanical watch repair, restoration, and servicing work. A reliable replacement part for maintaining or restoring vintage watch movements.
As usual, this item will be packaged carefully and dispatched with tracking. International shipping is available upon request.
