The Audemars Piguet Royal Oak Perpetual Calendar Skeleton "150th Anniversary" Ref. 26585XT.OO.1220XT.01

The Audemars Piguet Royal Oak Perpetual Calendar Skeleton "150th Anniversary" Ref. 26585XT.OO.1220XT.01
Key Features:

1. Case:

   • Material: Titanium

   • Diameter: 41 mm

   • Thickness: 9.5 mm

   • Finish: Brushed and polished titanium with the iconic Royal Oak octagonal bezel.

   • Water Resistance: 20 meters (2 bar).

2. Dial:

   • Skeletonized (openworked) dial with a smoked blue tint, revealing the intricate inner workings of the movement.

   • Applied hour markers and Royal Oak hands with luminescent coating for low-light visibility.

   • Sub-dials for perpetual calendar functions: day, date, month, leap year, and moon phase.

3. Movement:

   • Caliber: 5134 (based on the 5133, but skeletonized for this model).

   • Type: Automatic winding.

   • Functions: Perpetual calendar, hours, minutes, moon phase, and leap year indicator.

   • Power Reserve: Approximately 40 hours.

   • Frequency: 19,800 vibrations per hour (2.75 Hz).

   • Jewels: 38.

   • Finishing: Extensive hand-finishing, including bevelling, polishing, and satin brushing, visible through the skeletonized dial and caseback.

4. Bracelet:

   • Material: Titanium.

   • Design: Integrated bracelet with the Royal Oak's signature "tapisserie" pattern.

   • Clasp: Folding clasp with AP branding.

5. Special Features:

   • Limited Edition: Released as part of Audemars Piguet's 150th-anniversary celebration.

   • Skeletonized Movement: The movement is meticulously openworked to showcase the craftsmanship and complexity of the perpetual calendar mechanism.

   • Moon Phase: Displays the lunar cycle with high precision, requiring adjustment only once every 125 years.

6. Aesthetics:

   • The smoked blue tint on the skeletonized dial gives the watch a modern and sophisticated look, while the titanium case and bracelet provide a lightweight and durable feel.

   • The watch retains the iconic Royal Oak design, including the octagonal bezel and integrated bracelet.

Additional Notes:

• This model is part of Audemars Piguet's "150th Anniversary" collection, which features limited-edition pieces with unique designs and finishes.

• The skeletonized perpetual calendar complication is one of the most complex and prestigious features in haute horology, showcasing Audemars Piguet's expertise in watchmaking.

• The use of titanium makes the watch lighter and more wearable compared to stainless steel or gold models.

Market Context:

• The Ref. 26585XT.OO.1220XT.01 is a highly sought-after piece due to its limited production, unique design, and technical complexity.

• It appeals to collectors and enthusiasts who appreciate high-end complications, skeletonized movements, and the Royal Oak's iconic design.

If you are considering purchasing or collecting this watch, it is advisable to verify its authenticity and condition through an authorized dealer or reputable watch expert.