Sandalloy Mainspring S7213 – 1.60 x 0.08 x 11½” – Sandvik Steel Inc. USA

Sandalloy Mainspring S7213 – 1.60 x 0.08 x 11½” – Sandvik Steel Inc., USA – For Swiss Watches – NOS

Description:
Vintage Sandalloy mainspring, reference S7213, produced in the U.S.A. by Sandvik Steel Inc., Sandsteel Spring Division, Fairlawn, New Jersey. This high-grade mainspring was engineered for Swiss watches and made from Sandvik’s renowned “Sandalloy” material — designed for long-lasting elasticity, rust resistance, and consistent power delivery.

Specifications:

• Brand: Sandalloy (Sandvik Steel Inc.)

• Reference: S7213

• Width: 1.60 mm

• Strength: 0.08 mm

• Length: 11½ inches

• Type: White alloy mainspring for Swiss watches

• Marked: “Guaranteed not to break, rust or lose power under normal conditions”

• Condition: New old stock (NOS), unused, supplied in original red paper envelope with wax wrap

Condition Note:
This mainspring is new old stock, complete and unused. The red Sandalloy packet shows light storage wear but is clean, clearly printed, and includes its original sealed wax wrap.

Listing is for one mainspring only; multiple available.

Summary:
Genuine Sandalloy mainspring S7213 by Sandvik Steel Inc., Fairlawn N.J., made for Swiss watches. Ideal for precision repairs, restorations, or horological spares collections.

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