Vintage Altrax Mainspring No. 149 – 1.35 mm × 0.081 mm × 7.5 mm – Unbreakable

Description:
Genuine vintage Altrax mainspring No. 149, Swiss Made and supplied in its original case. A high-quality unbreakable and non-deforming mainspring designed for smaller manual-wind wristwatch movements.

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. 149
• Height: 1.35 mm
• Thickness (strength): 0.081 mm
• Barrel diameter: 7.5 mm
• Material: Tempered unbreakable steel
• Brand: Altrax
• Country of manufacture: Switzerland

Condition:

• New old stock (NOS) – unused and in original case.
• Packaging shows light age-related wear.

Summary:
A genuine Swiss-made Altrax mainspring No. 149, offering excellent strength and reliability for small manual-wind watch movements. Perfect for watchmakers, restorers, and collectors of vintage Swiss components.

Postage & Shipping:
As usual, this item will be packaged carefully and dispatched with tracking. International shipping is available upon request.