Description: Genuine vintage Altrax mainspring No. 138, Swiss Made and supplied in its original packaging. A high-quality unbreakable and non-deforming mainspring, ideal for servicing or restoring vintage manual-wind wristwatches.
Listing is for one mainspring only. Where multiples are available, some orders may not include the original outer packaging.
Specifications:
Type: Unbreakable mainspring
Reference: No. 138
Height: 1.30 mm
Thickness (strength): 0.14 mm
Barrel diameter: 12 mm
Material: Tempered unbreakable steel
Brand: Altrax
Country of manufacture: Switzerland
Condition:
New old stock (NOS) – unused and in original packaging.
Packaging shows minor age-related wear.
Summary: A genuine Swiss-made Altrax mainspring offering exceptional quality and resilience. Perfect for professional watchmakers, collectors, and restorers seeking reliable vintage components.
Postage & Shipping: As usual, this item will be packaged carefully and dispatched with tracking. International shipping is available upon request.
