Description: Genuine vintage Altrax mainspring, Swiss Made. A precision unbreakable and non-deforming mainspring suitable for small-to-medium manual-wind wristwatches. Supplied loose in a protective sleeve (no original packaging).
Listing is for one mainspring only. Where multiples are available, some orders may not include the original outer packaging.
Specifications:
Type: Unbreakable mainspring
Height: 1.35 mm
Thickness (strength): 0.10 mm
Barrel diameter: 8.5 mm
Material: Tempered unbreakable steel
Brand: Altrax
Country of manufacture: Switzerland
Condition:
New old stock (NOS) – unused, supplied loose without original packaging.
Stored in clean protective sleeves.
Summary: A genuine Swiss-made Altrax unbreakable mainspring ideal for restoring or servicing smaller vintage wristwatches. Perfect for watchmakers, collectors, and restorers.
Postage & Shipping: As usual, this item will be packaged carefully and dispatched with tracking. International shipping is available upon request.
