Monday, February 26, 2024

ARNOLD & SON – ULTRATHIN TOURBILLON Skeleton Edition

ARNOLD & SONULTRATHIN TOURBILLON Skeleton Platinum/Red Gold Limited Edition - 2024

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 The finesse of curves

With its graceful curves and wide apertures, Ultrathin Tourbillon Skeleton also stands out for its slimness. Its new case, with a diameter of 41.5 mm and a thickness of 8.4 mm, presents the flying tourbillon calibre in its purest expression. 

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The Ultrathin Tourbillon Skeleton collection, adorned in red gold or platinum, is issued in two limited series featuring 28 watches apiece.

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Arnold & Son continues its tour of the Ultrathin Tourbillon collection. The A&S8320 calibre unveils its curves, apertures and details within a 41.5 mm case in either red gold (5N) or platinum (PT 950), each released in a run of 28 timepieces. 

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Encased in this precious housing, Arnold & Son’s flying tourbillon stands out for its finesse and precision.

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Finesse, because at just 3.3 mm thick, it is one of the slimmest skeleton tourbillon calibres in existence. Precision, because this one-minute flying tourbillon is assembled with a variable-inertia balance for enhanced calibration stability.

Radiating originality

The purpose of a skeleton is to convey a message, be it geometric, generic or minimal. 

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For Ultrathin Tourbillon Skeleton, the skeletonisation of the calibre reveals pronounced curves and numerous inflection points that are highlighted by an original finish. 

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On both the Ultrathin Tourbillon Skeleton Red Gold and Platinum, the bridges are treated with rose-gold PVD (4N) after being decorated with radiating Côtes de Genève stripes.

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The flange around the calibre adopts this same finish, clearly revealing the Arnold & Son signature at 6 o’clock and enabling the off-centred white opal dial to be displayed in its purest form.

Golden carriage

At the heart of Ultrathin Tourbillon Skeleton beats the A&S8320 calibre, whose architecture and slimness are its principal protagonists. Designed without an upper bridge to minimise its thickness, the calibre is classed as a flying tourbillon.

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The variable-inertia balance with inertia blocks ensures more precise calibration over time. The slender triangular carriage is supported by a double arrow, which is actually a counterpoise. 

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The arrowhead on the staff of the escape wheel serves as a seconds pointer, as the carriage completes one rotation per minute.

Performance reserve

The changes to the tourbillon carriage and regulating organ give the A&S8320 calibre a power reserve of 100 hours. 

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While this is a larger power reserve than for standard tourbillons, particularly slim ones, it is entirely in line with the performance regularly achieved by Arnold & Son calibres.

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TECHNICAL SPECIFICATIONS

Collection:  ULTRATHIN TOURBILLON

Model:  ULTRATHIN TOURBILLON Skeleton Edition
  • Red gold: 1UTBR.Z01A.C246R, 28 timepieces – CHF 74,400 incl. tax (subject to change)
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  • Platinum: 1UTBX.Z01A.C245X, 28 timepieces – CHF 86,200 incl. tax (subject to change)
 Click, to see the large size. BIG FOTO  

 Movement 
Calibre  A&S8320, 1 minute flying tourbillon, manual winding 
Jewels  29 
Diameter
  32.00 mm Thickness  3.30 mm 
Power reserve  100 hours 
Frequency 3 Hz / 21,600 vph 

Finishes:   
  • mainplate: skeletonised, rose-gold PVD treatment (4N), Côtes de Genève stripes radiating from the centre
  • bridges: skeletonised, rose-gold PVD treatment (4N), polished and chamfered by hand, Côtes de Genève stripes radiating from the centre
  • wheels: circular satin-finished
  • screws: blued and chamfered, mirror-polished heads
  • tourbillon carriage: ‘Arnold & Son’ signature, polished, satin-finished and chamfered by hand
Functions hours, minutes
Dial 
Skeleton - White opal Gold powder mixed with coloured aluminium sparkles  
flange: coloured and circular satin-finished
Hour dial 
base: white mother-of-pearl, domed 
ring: rhodium-plated or with 4N gold plating
Case 
Material  18-carat (5N) red gold or Pt950 platinum 
Diameter  41.50 mm 
Thickness  8.40 mm (with crystal) 
Crystal  domed sapphire with an anti-reflective coating on both sides
Case back  sapphire crystal, with an anti-reflective coating 
Water-resistance 3 bar (30 metres /100 feet)
Strap 
Material 
Red gold: blue alligator leather, black alligator leather lining, hand-stitched
Platinum: brown alligator leather, black alligator leather lining, hand-stitched
Clasp: folding clasp in titanium with cover in 18-carat (5N) red gold or platinum (PT 950)

 🔰 Limited editions 28 timepieces released of each model 

🔴 Swiss retail prices Red gold: CHF 74,400 including taxes (subject to change) Platinum: CHF 86,200 including taxes (subject to change) 💰

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Press releases - 2024
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info@arnoldandson.com
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