Harry Winston Histoire de Tourbillon 9

Harry Winston presents 9th creation from its Histoire de Tourbillon collection. The new edition houses a triaxial tourbillon complication with retrograde jumping hours and retrograde minutes.

With a diameter of 46.5 mm, Histoire de Tourbillon 9 is the most compact watch in the Histoire de Tourbillon series. With steeply curved lugs that follow the natural contours of the wrist, the Histoire de Tourbillon 9 is pleasantly comfortable to wear. Additionally, the case band is relatively slim and features a high domed sapphire crystal known as a glass “box” that bulges over it. Histoire de Tourbillon 9 uses layers of transparency to create an artistic effect. The tourbillon holding the three carriages undertakes its rotation in a well of light measuring 20.5 mm in diameter.

On the back side of the case, a second glass box sits against the wrist. It incorporates a dome, which melts into the thickness of the wrist and gives the tourbillon all the space it needs to freely complete its triaxial rotation.

Through an openwork dial, the hour and minute hands circle directly above the movement and point to two zones calibrated with Arabic numerals. The power-reserve indicator at 8 o’clock displays a field and a two-part hand that share a distinctly three-dimensional nature.

On the bottom side is an entirely open worked and satin-finished barrel bridge. It structures the whole underside of the timepiece, further set off by a surface treatment that enhances the effect. The Histoire de Tourbillon 9’s two power accumulating organs are daisy-chained beneath the barrel bridge. However, the main element is still the triaxial tourbillon itself. The first carriage – the biggest – holds the other two, and takes 300 seconds to rotate on its axis. It encloses an intermediate carriage, which spins in 75 seconds. The third, and smallest, carriage directly holds the large variable-inertia balance wheel and completes its rotation in 45 seconds.

The power of the Histoire de Tourbillon 9 timepiece lies within the shape of the triaxial tourbillon’s external carriage. Another aesthetic hallmark – the three arches that cover and encircle the crown on Histoire de Tourbillon 9 – was inspired by the entrance of Harry Winston’s iconic Fifth Avenue Salon in New York City.

While jumping hours have already been featured on several Harry Winston timepieces, the Histoire de Tourbillon 9 breaks from convention. The hand that indicates them moves from 0 to 12 in progressive steps, before jumping back to the start. The dragging minutes follow the same path and the same cadence. The HW4504 caliber was designed exclusively for Histoire de Tourbillon 9. This development guarantees an exceptional degree of exclusivity, since only 20 models of Histoire de Tourbillon 9 will be made – ten in 18-karat white gold and ten in 18- karat rose gold.

On the white gold Histoire de Tourbillon 9, the dominant color is gray, while the rose gold version is predominantly black. The common denominator between these finishes is their extraordinarily superior level of quality. The beveling, which is carried out entirely by hand, highlights the sophisticated cut of the components.

Three further elements that often take a backseat have been treated with particular care on this timepiece. The strap in black alligator leather is stitched with thread made of precious metal – 18-karat rose gold thread was used on the version with a rose gold case, while the stitching on the white gold model is done in platinum. The Ardillon buckle was also redesigned for the occasion. Its new lines recall the case, especially its three reworked arches.

Technical details
Model: Histoire de Tourbillon 9

References 
18K rose gold: HCOMTT47RR002
18K white gold: HCOMTT47WW001

Movement
Caliber HW4504
Type Mechanical, manual winding
Diameter: 40.4 mm
Height: 10.60 mm (excluding tourbillon)
Number of components 408, of which 117 are in the tourbillon
Number of jewels 58

Tourbillon
– 1 triaxial tourbillon
– Internal carriage: 1 rotation in 45 seconds
– Intermediate carriage: 1 rotation in 75 seconds
– External carriage: 1 rotation in 300 seconds

Barrels: Fast-rotating series-coupled barrels (1 revolution in 3.2 hours),1 barrel fitted with a spring featuring a sliding brace
Power reserve: 50 hours
Frequency: 21,600 vibrations/hour (3Hz)
Balance springs: Phillips terminal curve and Geneva-style stud
Balance wheels: Variable-inertia with 18K gold adjusting screws
Finishes: Satin-finished and circular-grained mainplate, titanium bridges, circular satin-brushing and microbeading, titanium tourbillon bridges

Functions 
Retrograde jumping hours, retrograde dragging minutes, power reserve with hand

Case 
18K rose gold or 18K white gold
Diameter: 46.5 mm
Height: 20.84 mm
Crystal: Domed sapphire crystal, with double-sided anti-reflective coating
Case back: Open, domed sapphire crystal with double-sided antireflective coating
Water-resistance: 3 bar

Dial 
Skeletonized dial

Strap 
HCOMTT47RR002: Black alligator leather with stitching in 18K rose gold thread
HCOMTT47WW001: Black alligator leather with stitching in 950 platinum thread
Buckle: Ardillon buckle in 18K rose gold or 18K white gold

Limited Edition 
HCOMTT47RR002: 10 pieces
HCOMTT47WW001: 10 pieces

 

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.