Audemars Piguet Royal Oak 15407BA – 18K Yellow Gold Double Balance Wheel Openworked
Basic Information
| Specification | Details |
|---|---|
| Brand | Audemars Piguet |
| Collection | Royal Oak |
| Model | Double Balance Wheel Openworked |
| Full Reference | 15407BA.OO.1220BA.01 |
| Short Reference | 15407BA |
| Listing Code | PM38M6 |
| Production Year | 2025 |
| Condition | New |
| Signs of Wear | None |
| Gender | Men’s / Unisex |
| Availability | In Stock |
| Movement | Automatic |
| Case Material | 18K Yellow Gold |
| Case Diameter | 41mm |
| Dial | Skeletonized / Openworked |
| Bracelet Material | 18K Yellow Gold |
| Bracelet Size | 7.75 Inches, Full Links |
| Original Box | Included |
| Original Papers | Included |
| Presentation | Full Set |
Movement and Caliber
| Specification | Details |
|---|---|
| Movement Type | Mechanical Selfwinding |
| Caliber | Audemars Piguet 3132 |
| Regulating Mechanism | Double Balance Wheel |
| Power Reserve | Approximately 45 Hours |
| Jewels | 38 |
| Frequency | 21,600 vph / 3 Hz, Reference-Level |
| Movement Architecture | Openworked |
| Automatic Winding | Yes |
| Hours and Minutes | Yes |
| Central Seconds | Reference-Level |
| Chronograph | No |
| Date Display | No |
Case
| Specification | Details |
|---|---|
| Case Material | 18K Yellow Gold |
| Case Diameter | 41mm |
| Case Thickness | Not Provided |
| Bezel Material | 18K Yellow Gold |
| Bezel Design | Royal Oak Octagonal |
| Crystal | Sapphire |
| Caseback | To Be Verified |
| Water Resistance | 50m / 5 ATM, Original Rating |
| Case Condition | New / Unworn |
Dial
| Specification | Details |
|---|---|
| Dial Type | Skeletonized / Openworked |
| Dial Design | Exposed Mechanical Movement |
| Dial Color | Openworked; Specific Finishing Not Provided |
| Visible Movement | Yes |
| Visible Double Balance Wheel | Yes |
| Hour Numerals | No Numerals |
| Hour Markers | To Be Verified |
| Hands | To Be Verified |
| Date Display | No |
| Chronograph Counters | No |
Bracelet / Clasp
| Specification | Details |
|---|---|
| Bracelet Material | 18K Yellow Gold |
| Bracelet Color | Yellow Gold |
| Bracelet Style | Integrated Royal Oak |
| Bracelet Size | Approximately 7.75 Inches |
| Bracelet Configuration | Full Links, as Listed |
| Clasp Type | Folding Clasp |
| Clasp Material | Yellow Gold |
| Bracelet Condition | New / Unworn |
Functions and Technical Features
-
Hours and minutes
-
Central seconds, reference-level
-
Mechanical automatic winding
-
Patented double balance wheel regulating mechanism
-
Openworked movement architecture
Included Accessories
| Accessory | Details |
|---|---|
| Original Audemars Piguet Inner Box | Included |
| Original Audemars Piguet Outer Box | Included |
| Original Audemars Piguet Papers | Included |
| Audemars Piguet Warranty Card | Included |
| Integrated Yellow Gold Bracelet | Included |
| Bracelet Links | Full Links, as Listed |
| Presentation | Full Set |
Audemars Piguet Royal Oak 15407BA – 18K Yellow Gold Double Balance Wheel Openworked
The Audemars Piguet Royal Oak 15407BA represents an exceptional combination of precious-metal craftsmanship, mechanical innovation, and the unmistakable architecture of the Royal Oak collection.
Crafted in 18K yellow gold, this 41mm luxury sports watch features an intricately skeletonized dial that reveals the mechanical artistry of Audemars Piguet’s Double Balance Wheel Openworked movement.
Its automatic caliber 3132 incorporates the brand’s patented double balance wheel mechanism, providing an impressive display of technical sophistication.
This 2025 example is offered in new and unworn condition, complete with its original Audemars Piguet box, papers, and warranty card.
The Heritage of the Royal Oak Collection
Introduced in 1972, the Royal Oak revolutionized luxury sports-watch design through its unconventional combination of fine mechanical watchmaking and industrial-inspired architecture.
Designed by Gérald Genta, the original Royal Oak introduced an octagonal bezel, exposed screws, integrated bracelet, and distinctive geometric construction.
The Audemars Piguet Royal Oak 15407BA continues this heritage while introducing sophisticated mechanical engineering and an entirely openworked display.
Its recognizable proportions preserve the collection’s identity, while the 18K yellow gold construction creates an especially luxurious interpretation of the original design.
Exquisite 41mm 18K Yellow Gold Case
The Audemars Piguet Royal Oak 15407BA features a 41mm case crafted from 18K yellow gold.
The warm tones of the precious metal provide a striking visual contrast against the exposed movement components.
Its angular architecture emphasizes the recognizable geometry of the Royal Oak, combining carefully finished surfaces with distinctive case construction.
The substantial presence of yellow gold reinforces the watch’s luxurious character while preserving the sporting identity of the collection.
Iconic Yellow Gold Octagonal Bezel
The Audemars Piguet Royal Oak 15407BA incorporates the signature octagonal bezel that has defined the Royal Oak since its introduction.
Crafted from yellow gold, the bezel creates an architectural frame around the intricate skeletonized movement.
Its recognizable geometry and exposed fasteners preserve the design language established by the original Royal Oak.
The combination of precious-metal construction and refined finishing creates a distinctive balance between contemporary luxury and traditional craftsmanship.
Intricate Skeletonized Openworked Dial
One of the defining characteristics of the Audemars Piguet Royal Oak 15407BA is its openworked dial.
Rather than concealing the movement beneath a conventional dial, the skeletonized architecture reveals the intricate mechanical components responsible for the watch’s operation.
The exposed bridges, wheels, and regulating assembly create a layered appearance that introduces exceptional visual depth.
This construction transforms the movement into a central element of the watch’s design.
The absence of conventional hour numerals allows the mechanical architecture to remain the primary visual focus.
Patented Double Balance Wheel Technology
The Audemars Piguet Royal Oak 15407BA is distinguished by Audemars Piguet’s patented double balance wheel mechanism.
This innovative regulating system incorporates two balance wheels and two hairsprings mounted on the same axis.
The construction is designed to improve regulating stability and contribute to consistent timekeeping performance.
Its prominent placement within the openworked movement allows the wearer to appreciate the mechanical innovation directly.
The double balance wheel system is a defining feature of this Royal Oak reference, demonstrating Audemars Piguet’s commitment to advanced mechanical watchmaking.
Automatic Audemars Piguet Caliber 3132
At the heart of the Audemars Piguet Royal Oak 15407BA is the automatic caliber 3132.
This sophisticated mechanical movement incorporates 38 jewels and provides approximately 45 hours of power reserve.
The caliber is associated with an operating frequency of 21,600 vibrations per hour, equivalent to 3 Hz.
Its automatic winding mechanism uses the natural movement of the wearer’s wrist to replenish the mainspring.
The combination of self-winding operation, openworked construction, and the patented double balance wheel mechanism makes caliber 3132 a particularly distinctive expression of modern Swiss watchmaking.
The Art of Openworked Movement Finishing
The Audemars Piguet Royal Oak 15407BA demonstrates the craftsmanship involved in creating a sophisticated openworked movement.
Skeletonization requires carefully removing material from movement components while preserving their essential structural and mechanical functions.
The resulting architecture reveals the intricate relationships between the movement’s bridges, wheels, and regulating system.
This process places considerable emphasis on both technical precision and decorative finishing.
The exposed mechanical construction reflects Audemars Piguet’s long-standing expertise in fine movement craftsmanship.
Integrated 18K Yellow Gold Bracelet
The Audemars Piguet Royal Oak 15407BA features an integrated bracelet crafted from 18K yellow gold.
Its distinctive articulated links continue the architectural design of the case, creating a seamless transition around the wrist.
The combination of satin-brushed surfaces and polished accents emphasizes the refined finishing associated with the Royal Oak collection.
A yellow gold folding clasp completes the configuration.
The bracelet is listed as measuring approximately 7.75 inches with full links, providing a useful sizing reference.
Sapphire Crystal and Original Water Resistance
The Audemars Piguet Royal Oak 15407BA features a sapphire crystal that protects its intricate openworked display.
Sapphire is valued in luxury watchmaking for its resistance to many everyday scratches.
The watch carries an original water-resistance rating of 50 meters, equivalent to 5 ATM.
As with any mechanical luxury watch, water exposure should be considered in relation to the condition of its seals and case components.
Professional pressure testing is recommended before relying on the stated water-resistance rating.
A Distinguished Precious-Metal Royal Oak
The Audemars Piguet Royal Oak 15407BA combines several characteristics that set it apart in contemporary haute horlogerie.
Its 18K yellow gold case and bracelet provide an exceptionally luxurious foundation, while the skeletonized movement creates a distinctive technical appearance.
The patented double balance wheel mechanism adds mechanical sophistication, distinguishing this reference from conventional time-only Royal Oak models.
The watch’s 41mm proportions and integrated bracelet preserve the collection’s unmistakable architectural identity.
Together, these elements create a compelling combination of precious-metal craftsmanship, mechanical innovation, and iconic design.
New 2025 Example with Original Box and Papers
This particular Audemars Piguet Royal Oak 15407BA was produced in 2025 and is presented in new and unworn condition.
The watch shows no reported signs of wear and includes its original Audemars Piguet box and papers.
An Audemars Piguet warranty card is also included, completing the full-set presentation.
The integrated yellow gold bracelet is described as having full links and a size of approximately 7.75 inches.
Discover the Audemars Piguet Royal Oak 15407BA
The Audemars Piguet Royal Oak 15407BA brings together the celebrated architecture of the Royal Oak, the brilliance of 18K yellow gold, and the mechanical sophistication of the Double Balance Wheel Openworked collection.
Its 41mm case, integrated yellow gold bracelet, skeletonized dial, and automatic caliber 3132 create an exceptional expression of Swiss luxury watchmaking.
Presented as a new 2025 example with original box and papers, this Royal Oak offers an impressive combination of technical innovation, mechanical artistry, and precious-metal craftsmanship.
