Samson Spring No. 7027 – Mainspring 1.60 x 0.08 x 11½" – Dennison 7 / 13

Samson Spring No. 7027 – Mainspring 1.60 x 0.08 x 11½" – Dennison 7 / 13 – Swiss NOS

Description:
Vintage Samson Spring No. 7027 mainspring, made in Switzerland. Precision white alloy mainspring offering smooth performance, excellent strength, and resistance to corrosion. Suitable for a range of larger wristwatch and small pocket watch movements requiring a 1.60mm x 0.08mm x 11½" spring.

Specifications:

• Brand: Samson Spring

• Part No: 7027

• Width: 1.60mm

• Strength: 0.08mm

• Length: 11½ inches (29.21cm)

• Dennison: 7 / 13

• Material: White alloy

• Condition: New old stock (NOS), unused, in original foil wrap and packet

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.

Summary:
A genuine vintage Samson Spring Swiss mainspring, ideal for watchmakers, repairers, and restoration projects. Designed for larger wristwatches or compact pocket watch calibres needing a longer 11½" spring.

Shipping:
As usual, this item will be packaged carefully and dispatched with tracking. International shipping is available through the eBay Global Shipping Programme (GSP).