Samson Spring No A25 – Mainspring for AS 12½''' / Cal. 1302 – 1.50 x 0.095 x 10½

Description:
Original Samson Spring No. A25 mainspring, made in Switzerland. Quality Swiss-manufactured white alloy mainspring, suitable for AS 12½ ligne (calibre 1302) and equivalent movements. Known for durability and precision, Samson Springs were widely used by professional watchmakers throughout the mid-20th century.

Specifications:

• Brand: Samson Spring
• Part No: A25
• Width: 1.50mm
• Strength: 0.095mm
• Length: 10½ inches (26.67cm)
• Dennison: 6 / 11½
• Material: White alloy
• For: AS 12½ Ligne, Calibre 1302 and similar movements
• Condition: New old stock (NOS), unused, in original packaging

Condition Note:
This is new old stock (NOS) — unused and still in its original packaging. Packaging may show signs of long-term storage, and the mainspring or retaining ring may exhibit minor tarnish or age-related discolouration.
Listing is for one mainspring only; multiple available.

Summary:
Genuine vintage Swiss Samson Spring mainspring — ideal for restoring or servicing AS 12½ ligne watches or other compatible movements. Reliable quality and a desirable brand for traditional watch repairers.

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