Nu Vigor Mainspring No.84D, 1.60 x 0.07 x 24.13mm, Dennison 7 x 14, Benrus 7¾ L

Description:
Vintage Nu Vigor mainspring No. 84D, made in Switzerland and designed for Benrus 7¾ L “I” wristwatch movements. Known for their precision and quality, Nu Vigor springs were widely used by professional watchmakers in the mid-20th century, adding reliable power and longevity to classic timepieces.

Specifications:

• Brand: Nu Vigor
• Part No: 84D
• For: Benrus 7¾ L “I” movement
• Width: 1.60 mm
• Strength: 0.07 mm
• Length: 24.13 mm (9½ inches)
• Dennison: 7 x 14
• Material: Tempered Swiss alloy steel
• Condition: New old stock (NOS), unused, sealed in original wax envelope

Condition Note:
This is new old stock (NOS) — unused and still sealed in its original packaging. The paper envelope shows light ageing and marks from storage, and the mainspring may display slight tarnish from long-term preservation.

Summary:
Original Nu Vigor mainspring No. 84D, Made in Switzerland, suitable for Benrus 7¾ L “I” and similar mid-century wristwatch calibres. A quality Swiss replacement part ideal for collectors, restorers, or vintage watch repairers.

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