Extremely Rare Audemars Piguet Grande Complication Tourbillon Automatic Skeleton Platinum on Bracelet – Limited to only 10 Pieces

Extremely fine and rare, skeletonized, platinum, self-winding, water-resistant, gentlemen’s wristwatch with one-minute tourbillon regulator, 54-hour power reserve, and integrated platinum Audemars Piguet bracelet with deployant clasp. Accompanied by original fitted box, pouch, Certificate of Origin and Warranty, instruction booklet and accessories.

In the second half of the 18th century, the most advanced watchmakers were working on improving the accuracy of timing. Achieving identical setting of watches in all the vertical and horizontal positions still remained one of the major problems. In the vertical positions in particular, terrestrial attraction disturbs the regulating organ. In 1801, the watchmaker Abraham-Louis Breguet created a tourbillon system that would balance rate variations in the various vertical positions.

The operating principle has remained the same to the present day: the escapement components (wheel, pallet and balance) are not fitted rigidly in the movement, but are carried by a mobile cage. This cage rotates around its axis together with the escapement components, at a rate of one revolution per minute, and by its constant rotational motion compensates for rate variations in the vertical positions.

185 years later, in 1986, Audemars Piguet succeeded for the first time in fitting this system in a wristwatch with an automatic extra-thin movement. This automatic movement is provided with the smallest cage ever built, with an outer diameter measuring only 7.6 mm. With the escapement wheel included, this cage consists of no less than 60 different parts and weighs only 0.136 gram.

FUNCTIONS: Self-winding, tourbillon regulator, power reserve indication, date, hours, minutes, small seconds

SIGNED: Dial, case, movement

DIMENSIONS: Width 40 mm, length 51 mm (lug to lug), thickness 12 mm

CASE: Three-part, polished and brushed, octagonal bezel set with 8 hexagonal nuts embanked in 8 screws on the back, sapphire crystals, setting time crown fitted on the case back

DIAL: Skeletonized, off-center white hour ring with painted black Roman numerals, subsidiary white rings for the date and power reserve, visible tourbillon cage enhanced by a fourth white ring

HANDS: Black feuilles, blue steel épée for power reserve and date

MOVEMENT: Cal. 2875, copper-nickel-zinc bottom plate and bridges, 41 jewels, titanium tourbillon cage, balance with weighting screws, “KIF Elastor” balance-wheel shock absorbing system, flat balance spring, 21,600 vibrations/hour, automatic winding mechanism with weight having limited or sector rotation, platinum/iridium rotor

Audemars Piguet 25902PT.OO.1110PT.01, AP 25902PT.OO.1110PT.01