Arnold & Son Nebula 40 Steel: A Refined Skeleton for Contemporary Collectors

Arnold & Son introduces two striking models to its Nebula collection with the Nebula 40 Steel in Golden and Black editions. Renowned for their intricate architecture and symmetry, these new pieces bring a 40mm stainless steel case and two unique finishes that embody modern elegance and technical prowess. Both editions are designed around the A&S5201 skeletonized calibre, featuring seven iconic bridges that converge toward the center, creating an impression of depth and meticulous structure.

Technical Mastery in a Compact 40mm Case

The Nebula 40 Steel features an updated case design with streamlined lugs, a softly rounded bezel, and a vertical case middle, harmonizing its compact 40mm diameter with a thickness of only 9.10mm. This meticulous design evolution highlights Arnold & Son’s commitment to clarity and elegance, giving the Nebula a contemporary and refined profile.

At its heart, the Nebula 40 Steel houses the hand-wound A&S5201 calibre, known for its exceptional 90-hour power reserve—an impressive feat for a skeletonized movement. Two large barrels are arranged in series, ensuring reliable energy transmission to the gear train, laid out in alignment with the seven bridges that radiate from the center. Oscillating at a frequency of 3 Hz, the movement’s balance adds precision to this visually captivating timepiece.

A Tale of Two Editions: Black and Golden

Arnold & Son offers two distinct versions of the Nebula 40 Steel, each with unique aesthetic features. The Black Edition, with a black-treated mainplate, flange, and barrel covers, offers a contemporary appeal. This edition is available with three bracelet options: a stainless steel bracelet with a three-link design, a hand-stitched alligator leather strap, and a black textured rubber strap for versatility in wear.

In contrast, the Golden Edition, limited to just 88 pieces, features gold-colored accents across the mainplate and barrel covers, available exclusively with a stainless steel bracelet. Both models exhibit the “Rayons de la Gloire” guilloché motif, a subtle signature of Arnold & Son, alongside palladium-finished bridges with polished corners and satin-finished surfaces that create dynamic light play across the dial.

The Seven Bridges: A Defining Structure

The A&S5201 calibre is visually anchored by seven skeletonized bridges, an architectural choice inspired by nebulae formations. This structure lends the Nebula its distinct appearance, with each bridge converging toward the center, creating symmetry and transparency that capture attention. On the case back, two intersecting ogival bridges support the movement’s key components, highlighting the brand’s dedication to both functionality and design.

Technical Specifications

  • Functions: Hours, minutes, small seconds
  • Movement: A&S5201 calibre, hand-wound mechanical, 24 jewels
  • Power Reserve: 90 hours
  • Frequency: 3 Hz / 21,600 vph
  • Decoration: Gold- or black-treated mainplate, ‘Rayons de la Gloire’ guilloché, and polished bridges
  • Case: Stainless steel, 40mm diameter, 9.10mm thickness, 30m water resistance
  • Crystal: Domed sapphire with double anti-reflective coating
  • Bracelets:
    • Golden Edition: Stainless steel bracelet (limited to 88 pieces)
    • Black Edition: Stainless steel, alligator leather, or black rubber options
  • Reference Numbers:
    • Golden Edition: 1NEGS.H01A.S135D
    • Black Edition on alligator: 1NEGS.B03A.C169S
    • Black Edition on steel: 1NEGS.B01A.S135D
    • Black Edition on rubber: 1NEGS.B02AK.003S

A Collectible Work of Art

The Arnold & Son Nebula 40 Steel in Golden and Black Editions represents a perfect blend of traditional Swiss craftsmanship and contemporary watchmaking design. Each model is a sophisticated take on the skeletonized watch, with Arnold & Son’s meticulous engineering creating a cohesive yet intricate timepiece.

To explore the Nebula 40 Steel collection, visit Arnold & Son’s website.

Charles d'Ancona Avatar