To celebrate the 150th anniversary of the brand, Audemars Piguet launched the Royal Oak series perpetual calendar watch “150th Anniversary” limited edition (model: 26585XT.OO.1220XT.01). This watch not only combines modern materials and exquisite craftsmanship, but also cleverly incorporates the brand’s historical elements, making it a treasure that watch enthusiasts are eager to collect. Today, we will provide an in-depth analysis of this limited edition watch in terms of design, movement performance and purchasing advice.

Design Highlights: Perfect fusion of modern and classic
- Material and appearance
The new watch is 41 mm in diameter and only 9.9 mm thick, making it comfortable to wear. The case is made of lightweight titanium, and the bezel, case back ring and central link of the bracelet are made of BMG (bulk metallic glass). This alloy containing more than 50% palladium is not only strong and durable, but also gives the watch a unique texture.
The anti-glare sapphire crystal mirror and see-through case back design allow the wearer to clearly appreciate the precise operation of the movement. - Disk design
The sapphire dial with blue sub-dial ring pays tribute to Audemars Piguet’s antique skeleton perpetual calendar pocket watch (Ref. 25729). The 3, 6, 9 and 12 o’clock positions indicate the date, moon phase, day of the week, month and leap year respectively. The layout is classic and easy to read.
The blue inner bezel made of brass shows the week number and the minute track is marked inward. The detailed design shows the ingenuity. The 18K white gold round hour markers and blue “bathtub-shaped” hands are inlaid with fluorescent materials to ensure clear reading at night. The Audemars Piguet logo on the moon phase plate is the finishing touch.

Movement performance: hollow craft, accurate and stable
This watch is equipped with Caliber 5135 automatic movement, which is a skeletonized version of the discontinued Caliber 5134. The movement is assembled from 374 parts, contains 38 jewels, and vibrates at a frequency of 19,800 times per hour (2.75 Hz). The suspended barrel and hollow oscillating weight design not only enhance the beauty of the movement, but also ensure a 40-hour power reserve.

Limited edition: extremely valuable for collection
As a 150th anniversary commemorative model, this watch is limited to 150 pieces, each with an independent number, making it highly collectible. The price on the official website is 175,000 Swiss francs, equivalent to approximately 1.42 million yuan. For watch collectors, this is a rare investment opportunity.
Buying advice and pitfall avoidance guide
- Distinguish authenticity
When purchasing, you need to pay attention to the detailed craftsmanship of the case, dial and bracelet, especially the texture of the BMG material and the hollow design of the dial.
The movement of the authentic watch is finely polished, and the oscillating weight is engraved with the word “AP”, which can be carefully inspected through the see-through case back. - Price reference
The official website price is 175,000 Swiss francs (approximately 1.42 million yuan). Channels with lower prices than this may be risky. It is recommended to purchase through officially authorized dealers. - After-sales service
Audemars Piguet provides comprehensive after-sales service. Be sure to keep relevant certificates when purchasing in order to enjoy the brand warranty service.

Summary: classic inheritance, limited collection
The “150th Anniversary” limited edition of the Audemars Piguet Royal Oak series perpetual calendar watch has become the focus of the watch industry with its unique design, exquisite craftsmanship and limited edition scarcity. Whether you are a design lover or a watch collector, this watch deserves your attention. I hope that the analysis and purchasing suggestions in this article can provide you with valuable reference and help you easily buy the watch of your choice!
