Watch Mainspring – 1.70 x 0.11 x 300 - Federal Ref 4906

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: Federal
• Part Type: Mainspring
• Height:  1.70mm
• Thickness: 0.11mm
• Length: 300mm
  

Additional Notes:

• Martin 7 - 16
• Federal Ref: 4906
• Diameter: 9mm

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.