Arnold & Son Time Pyramid Black Edition

The Time Pyramid from Arnold & Son Instrument Collection is now available in a new Black Edition in striking black and gold tones featuring a black DLC treated stainless steel case.

The Time Pyramid watch draws inspiration from the regulators built by John Arnold over two centuries ago, as well as English skeleton clocks.

Originally conceived in the middle of the 19th century, such lavishly executed clocks showcased the mastery and unique aesthetical sense of English watchmakers. As ornamental as they were functional, English skeletonized clocks were prized for their sculptural and symmetrical construction, allowing for an unobstructed view of the beating mechanisms.

Arnold and Son Time Pyramid Black Edition watch

Reinterpreting the three-dimensional beauty of such antique skeleton watches in a format adapted for wristwatches resulted in the Arnold & Son skeletonized caliber A&S1615. Built in a unique format, the balance wheel is positioned at twelve o’clock, and at the opposite end of the movement at six o’clock, two mainspring barrels that supply the hand-wound caliber with an amazing 90 hours of power reserve, and provide a more constant force to the wheel train.

Arnold and Son Time Pyramid Black Edition watch

The gear train runs vertically in a linear format connecting the two barrels at sixo’ clock to the balance wheel at twelve o’clock, and endowing the movement with its pyramid structure. The bridges are designed so that all of the wheels, the two mainspring barrels, the escapement and balance wheel are all magnificently visible from the dial side.

Arnold and Son caliber A&S1615 hand-wound skeleton movement

Additionally, the movement is fitted with two power reserve indicators – one each on either side of the linear gear train – to display the energy level for each barrel separately. The power reserve hands indicate the reserve level via graduated dots (that are printed under the top sapphire crystal) in an arc format, and demonstrate how one barrel transfers energy to the second one when needed.

Housed in a 44.6mm Stainless Steel case with a black DLC coating, the movement has been reimagined with a blend of muted black and warm rose gold tones, highlighting the movement’s unique architecture while playing with light in a most fascinating manner.

Arnold and Son Time Pyramid Black Edition watch

The movement’s main plate and bridges are treated in black ADLC, while still retaining classical haute horlogerie decoration such as Côtes de Genève strips and chamfered, polished edges. The various wheels of the symmetrical gear train as well as the barrels are given a rose gold treatment, as are all the hands and the frame holding the sapphire hours and minutes dial.

The Arnold and Son Time Pyramid Black Edition watch comes fitted with a hand-stitched black alligator leather strap, with a black DLC treated steel tang buckle matching the case.

This timepiece is limited to 50 pieces.

Technical details

Model: Time Pyramid (Black Edition)
References: 1TPBS.R01A.

Caliber: A&S1615
Manufacture Arnold & Son skeletonized movement, hand-wound, 27 jewels, diameter 37.60 mm, thickness 4.40 mm, power reserve over 90 h, double barrel, 21,600 vibrations/h
Functions: Hours, minutes, seconds, double power reserve indication
Movement decoration: Skeletonized black ADLC treated movement and golden wheels with Haute Horlogerie finishing: hand-chamfered bridges with polished edges, Côtes de Genève, circular satin-finished wheels

Sapphire, circular grained gold treated frame with chamfered and polished edge
Hands: Golden hands, hours and minutes hands with white SuperLumiNova®

Stainless steel with black DLC coating, diameter 44.60 mm, cambered sapphire with anti-reflective coating on both sides, translucent-grey coated sapphire case back, water-resistant to 30 m

Hand-stitched black alligator leather

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