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Face up photo of Double Tourbillon White Gold
World Time

Double Tourbillon White Gold

As sparkling as a starry sky, aventurine raises it to the heavens. Harnessing the beauty of stone and glass, this Arnold & Son piece, a one-off, reveals the duality of its double tourbillon.

Limited to 1 piece.

Stone of the sky, stone of the earth

Their spirit is entirely in keeping with the brand’s historic heritage. John Arnold’s marine chronometers sought to tell the local time by observing the stars and the time in a distant location as a universal reference point. Thus, Double Tourbillon White Gold’s sophisticated calibre can follow two distinct time zones to the minute.

In watchmaking language, the tourbillon is a rare construction, and this is even more true of the double tourbillon. Its creation, the choice of its materials and above all its structural approach meet objectives that are at once aesthetic, historical and horological. Double Tourbillon White Gold sits at the crossroads of a number of major paths that Arnold & Son follows consistently and coherently.

In terms of aesthetics, Double Tourbillon White Gold draws on each mineral’s sumptuous appearance. Aventurine glass in the blackest of blues strewn with stars sparkles with life and subtle glints. The off-centre hour dials are crafted in white opal, offering a contrasting softness. Heaven and earth: the symbolism of these materials contributes to the narrative density of Double Tourbillon White Gold.

CHF 227,100
incl. VAT
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Technical Specifications

Reference: 1DTAW.Z02A.C183W
local hours and minutes (Roman numerals), independent reference hours and minutes (Arabic numerals)
37.30 mm
8.35 mm
Power reserve:
90 hours
3 Hz / 21,600 vph
blue aventurine glass
white opal
18K white gold
43.5 mm
domed sapphire with an anti-reflective coating on both sides
sapphire crystal with an anti-reflective coating
Water resistance:
3 bar (30 metres/100 feet)
blue with purple alligator leather, hand-stitched
folding clasp, 18K white gold

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Soldier photo of Double Tourbillon White Gold


In historical terms, Double Tourbillon White Gold is based on the two fundamental principles of John Arnold’s work – chronometry and world time. His aim in producing marine chronometers was to simplify and reproduce a perfectly reliable means of time measurement. The goal was to retain knowledge of the time at a journey’s starting point. By comparing this to the time in the place of measurement, taken by observing true solar noon, ocean navigators were able to measure their position on the east-west axis, i.e. their longitude.

Double Tourbillon White Gold keeps this duality alive with a local time display positioned on the dial at 12 o’clock and presented in Roman numerals. It is complemented by a remote time, positioned at 6 o’clock and presented in Arabic numerals. The hours and minutes displays of these two dials are entirely independent.

Photo of Double Tourbillon White Gold


The structure of this movement is highlighted by extremely accomplished finishes. Radiating Côtes de Genève stripes on the bridges, a pearlised main plate, circular graining on the wheels, polished gold chatons: everything about the A&S8513 calibre exudes distinction, craftsmanship and excellence.

The ample and elegant click spring that prevents the barrels from unwinding uncontrollably is not the least of these refinements. The hand-chamfering, satin-finishing and mirrorpolishing of the white gold tourbillon bridges is the highlight of an exceptionally elegant spectacle in relief. Double Tourbillon White Gold offers a mechanical pendant with a symbolic aesthetic that prevails on the dials of these one-off pieces.

Photo of Arnold & Son retailer in Kuala Lumpur

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