Arnold & Son
Ultrathin Tourbillon Red Gold
1.UTBR.I01A.C246R
One of the slimmest tourbillons in the world is shedding its adornments. Pared back to its purest expression, the Ultrathin Tourbillon Gold is elegantly revealed.
THB2,958,000
At the heart of the Ultrathin Tourbillon Gold beats the A&S8300 calibre, which – at only 2.97 mm thick – is one of the slimmest ever designed. The highest point of the calibre is at the top of its tourbillon carriage.
The variable-inertia balance ensures more stable calibration over time. The redesigned tourbillon carriage echoes the leading role John Arnold played in marine exploration during the 18th century. Its triangular shape evokes a sextant, while its double-arrow counterpoise represents an anchor. The point in the middle serves as a seconds marker, as the carriage completes a full rotation in one minute.
In the background of the tourbillon, its bridge appears in the mainplate aperture, handengraved with a design inspired by the engravings found on John Arnold’s pocket watches. Crafted in 3N yellow gold, it blends with the gear train while creating an aesthetic contrast with the rest of the calibre. Modifications to the tourbillon carriage and regulating organ have increased the power reserve of the A&S8300 calibre, which lasts 100 hours. While this is a high power reserve compared to classic tourbillons, particularly slim ones, it is entirely in line with the performances regularly achieved by Arnold & Son calibres.t
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