Rolex [Calibre 1401] - Mainspring, Weak Strength - 2913-1

The base item Rolex [Calibre 1401] – Mainspring, Weak Strength – 2913-1 lists the part number 2913-1 specifically for spare parts search for Calibre 1401.

In the Rolex documentation, 1401 is designated as Base Calibre 1400. Therefore, the mainspring, weak strength is classified as a shared component of calibres 1400 and 1401 but gets its own 1401 item here with a unique search, title, and SEO context.

For precise identification, the calibre designation, part number 2913-1, and the description mainspring, weak strength are checked together. The technical reference image supports this verification in servicing, repair, and spare parts search.

Later variants document the available original part, its condition, and the actual delivery scope.