Watch-Craft Mainspring 4177W – 1.45 x 0.09 x 10¼" – 5½ Denn

Watch-Craft Mainspring 4177W – 1.45 x 0.09 x 10¼" – 5½ Denn – For 12 Size Movements

Description:
Vintage Watch-Craft 4177W mainspring in sealed original packaging by C. & E. Marshall Co. Made from white alloy, non-magnetic, rustproof and unbreakable. These quality American-made mainsprings were widely used for 12-size pocket watch movements and similar applications.

Specifications:

• Brand: Watch-Craft

• Part No: 4177W

• Width: 1.45mm

• Strength: 0.09mm

• Length: 10¼ inches

• Dennison: 5½

• Suitable for: 12-size American pocket watch movements (Elgin, Waltham, Illinois, etc.)

• Material: White alloy, non-magnetic, unbreakable, rustproof

• Condition: New old stock (NOS), sealed in original Marshall Permatex 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.

Summary:
A genuine vintage Watch-Craft mainspring — ideal for collectors, repairers, and restorers of 12-size pocket watches. Reliable quality from one of the best-known watch part suppliers of the 20th century.

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